by Pigeon Patrol | Jun 28, 2021 | Bird Netting, history of pigeons, MBCA, pet bird, Pigeon Droppings, Pigeon Patrol's Services
Pigeons (or rock doves), ubiquitous urban birds, are the descendants of birds brought from Europe centuries ago who escaped from captivity and reverted back to the wild. Many city residents and visitors find pigeons pleasant and interesting.
Pigeon Facts
Pigeons mate for life, and both parents care for their young. They flock in large numbers in order to protect themselves from predators. Pigeons naturally stabilize their own populations in accordance with the food supply and other factors. They can fly up to 50 miles per hour and can travel up to 500 miles in one day.1 Their hearing and vision are both excellent.
Pigeons’ navigational abilities, which are largely dependent on keen vision and a superlative memory for topographic details, are legendary. A 10-year study of pigeon flight patterns conducted at Oxford University found that the birds rely more on their knowledge of human transport routes than on their internal magnetic compasses; one scientist said, “We followed some which flew up the Oxford bypass and even turned off at particular junctions. It’s very human-like.”2 One behavioral psychologist who studies pigeons remarked, “Pigeons commit new images to memory at lightning speed. . . . They organize images of things into the same logical categories that human beings use when we conceptualize.”3
The Disease Myth
The most widespread misconception about urban pigeons is that they are carriers of disease. Pest-control companies charge them with transmitting any number of diseases, but the truth is that the vast majority of people are at little to no health risk from pigeons. A search of epidemiological studies over more than 60 years found so few cases of diseases transmitted from feral pigeons to humans that the researchers concluded, “Although feral pigeons pose sporadic health risks to humans, the risk is very low, even for humans involved in occupations that bring them into close contact with nesting sites.”4
Histoplasmosis, cryptococcosis, and psittacosis are diseases that can be transmitted to humans from contact with bird feces, but the risk is considered to be small, with people who have compromised immune systems at the greatest risk.5 Psittacosis is usually associated with parrots in captivity.6
Poison Does Not ‘Control’ Pigeons
When people contact pest-control companies for advice on how to resolve conflicts with birds, operators often recommend using avicides, or bird poisons, such as Avitrol and DRC-1339, to “control” bird populations. Companies often tell potential customers that Avitrol and other avicides are “flock-dispersing agents” that “scare” birds away from areas where they are not wanted. They’ll even tell customers that these products are humane, but nothing could be further from the truth. Avicides such as Avitrol are acutely toxic and cause birds and other animals to suffer immensely. Avitrol attacks and impairs birds’ nervous systems. This causes birds who ingest the poison to become disoriented, exhibit erratic flight and tremors, and suffer violent convulsions for hours before they finally succumb to the effects of the toxin. Avitrol has been banned in New York City; San Francisco; Boulder, Colorado; and Portland, Oregon.7
A study published in the journal Veterinary Microbiology cautioned that killing pigeons “by shooting or poisoning is both unethical and ineffective as the place of the killed birds in the population is quickly filled by new juveniles or immigrating birds from neighbouring areas.”8 Any successful method of bird control must concentrate on prevention and making the location inhospitable to birds.
What You Can Do
For starters, don’t feed birds, and eliminate food and litter from the area. Excluding birds from an area and conditioning them to avoid the area are both effective, humane ways of dealing with a pigeon overpopulation problem. Conditioning birds to avoid an area should be done as early as possible in order to effectively discourage the birds from settling in.
Very simple modifications in a building’s structure can discourage birds from landing or nesting on the building. Steel, wood, or stone angled on building ledges prevents pigeons from nesting there. Open areas, such as vents, lofts, or eaves, can be sealed up to prevent pigeons from nesting in them. Bird barriers, including a thin metal coil that resembles a “slinky” toy, can be fastened to a building ledge to discourage birds from landing.
NEVER use sticky, transparent, bird “repellent” caulk. This substance is applied to ledges in the hope that birds will land, feel the stickiness of the caulk, and fly off, never to return. It is extremely dangerous because birds can easily get stuck to the ledges and lose wings or legs as they try to free themselves, or their wings may stick to their bodies, causing them to fall when they try to fly. They can also ingest the substance while cleaning themselves and die of poisoning.
Visual deterrents such as revolving lights, mirrors, or effigies of predator birds can also be effective.
Source
Pigeon Patrol Products & Services is the leading manufacturer and distributor of bird deterrent (control) products in Canada. Pigeon Patrol products have solved pest bird problems in industrial, commercial, and residential settings since 2000, by using safe and humane bird deterrents with only bird and animal friendly solutions. At Pigeon Patrol, we manufacture and offer a variety of bird deterrents, ranging from Ultra-flex Bird Spikes with UV protection, Bird Netting, 4-S Bird Gel and the best Ultrasonic and audible sound devices on the market today.
Voted Best Canadian wholesaler for Bird Deterrent products ten years in a row.
Contact us at 1- 877– 4– NO-BIRD, (604) 585-9279 or visit our website at www.pigeonpatrol.ca
Pigeon/Pigeon Patrol / Pigeons Roosting / Vancouver Pigeon Control /Bird Spikes / Bird Control / Bird Deterrent / Pigeon Deterrent? Surrey Pigeon Control / Pest /Seagull deterrent / Vancouver Pigeon Blog / Birds Inside Home / Pigeons in the cities / Ice Pigeons/ What to do about pigeons/ sparrows , Damage by Sparrows, How To Keep Raccoons Away, Why Are Raccoons Considered Pests/ De-fence / Pigeon Nesting/ Bird Droppings / Pigeon Dropping/ woodpecker control/ Professional Bird Control Company/ Keep The Birds Away/ Birds/rats/ seagull/pigeon/woodpecker/ dove/sparrow/pidgeon control/pidgeon problem/ pidgeon control/flying rats/ pigeon Problems/ bird netting/bird gel/bird spray/bird nails/ bird guard
by Pigeon Patrol | Jun 14, 2021 | Bird Spikes, Columbidae, Doves, history of pigeons, MBCA, Pigeon Droppings
Odors are known to be essential for navigation during homeward orientation and migration of some bird species. Yet little was known about their chemical composition. An international team has now identified volatile organic compounds that can be used for olfactory navigation by homing pigeons and proved the existence of suitable regional chemical gradients in the air on a landscape-scale in Tuscany.
Many bird species can find their way home even after being brought to remote or unfamiliar locations. Over 40 years of research on homing pigeons have shown that environmental odors play a crucial role in this process. Yet the chemical identity of these odors has remained a mystery. An international team of scientists from the Max Planck Institutes for Chemistry (Mainz) and of Animal Behavior (Radolfzell), and the Universities of Konstanz, Pisa and Mainz has now identified potential chemical navigational cues that could be used by homing pigeons. Based on the collected data, the researchers were also able to create regional olfactory maps for marine emissions, biogenic compounds, and anthropogenic mixed air and to establish the existence of regional navigable chemical gradients in the air.
During the scientific mission, which took place in 2017 and 2018 in the Italian region of Tuscany, the researchers measured a suite of airborne volatile organic compounds (VOCs) over a period of months at the pigeon’s home aviary. Some of these compounds are emitted by trees, the pine fragrance one smells during a walk in the forest. Other pungent natural emissions come from the sea, while still further VOCs can be emitted from industry. The measurements enabled regional maps to be constructed connecting chemicals with wind direction and speed. Additional measurements were taken in selected regional forest environments and by air using an ultralight plane flying at 180 meters – the average altitude of flying pigeon. The scientists merged the information they had gathered during the field campaigns with GPS tracks obtained from released birds. Thus, they generated multiple regional, horizontal and vertical spatial chemical gradients that can form the basis of an olfactory map.
Olfactory maps based on environmental odors
“Ornithologists from Germany and Italy have shown in more than 40 years of experiments, that pigeons use airborne odors to navigate home,” explains Nora Zannoni, post-doctoral researcher at Max Planck Institute for Chemistry and the study’s first author. Those results have shown that pigeons construct an olfactory map based on the distribution of environmental odors they have perceived over several months at the home aviary. This knowledge is then used as a compass at the point of release to return back home from unfamiliar sites. “By proving the existence of regional chemical gradients in the air around the experimental site we provide support for the olfactory navigation hypothesis and with atmospheric measurements we have found which chemicals can be used for navigation,” adds Zannoni. Some compounds come from forested areas (monoterpenes) or the sea (DMS) while others are emitted from cities and industrial complexes (trimethylbenzene), spots that act like chemical lighthouses.
One of the biggest challenges during this research campaign was its multidisciplinary character. “We had to combine the different approaches of several scientific disciplines – atmospheric and analytical chemistry, ornithology and animal behavior, computer science and statistics,” says Martin Wikelski, managing director at the Max Planck Institute of Animal Behavior.
“It’s amazing really,” adds Jonathan Williams the project leader at the MPIC’s Atmospheric Chemistry Department in Mainz. “We uncovered these chemical gradients using several tones of ultrasensitive scientific equipment, but the same complex odor information can be analyzed and converted to a regional map by a 400-gram pigeon.”
Source
Pigeon Patrol Products & Services is the leading manufacturer and distributor of bird deterrent (control) products in Canada. Pigeon Patrol products have solved pest bird problems in industrial, commercial, and residential settings since 2000, by using safe and humane bird deterrents with only bird and animal friendly solutions. At Pigeon Patrol, we manufacture and offer a variety of bird deterrents, ranging from Ultra-flex Bird Spikes with UV protection, Bird Netting, 4-S Bird Gel and the best Ultrasonic and audible sound devices on the market today.
Voted Best Canadian wholesaler for Bird Deterrent products ten years in a row.
Contact us at 1- 877– 4– NO-BIRD, (604) 585-9279 or visit our website at www.pigeonpatrol.ca
Pigeon/Pigeon Patrol / Pigeons Roosting / Vancouver Pigeon Control /Bird Spikes / Bird Control / Bird Deterrent / Pigeon Deterrent? Surrey Pigeon Control / Pest /Seagull deterrent / Vancouver Pigeon Blog / Birds Inside Home / Pigeons in the cities / Ice Pigeons/ What to do about pigeons/ sparrows , Damage by Sparrows, How To Keep Raccoons Away, Why Are Raccoons Considered Pests/ De-fence / Pigeon Nesting/ Bird Droppings / Pigeon Dropping/ woodpecker control/ Professional Bird Control Company/ Keep The Birds Away/ Birds/rats/ seagull/pigeon/woodpecker/ dove/sparrow/pidgeon control/pidgeon problem/ pidgeon control/flying rats/ pigeon Problems/ bird netting/bird gel/bird spray/bird nails/ bird guard
by Pigeon Patrol | Jun 14, 2021 | history of pigeons, MBCA, pet bird, Pigeon Control, Pigeon Droppings, Pigeon Patrol's Services, Pigeon Predators
The passenger pigeon (Ectopistes migratorius) is an extinct pigeon that was once widespread throughout North America. It was possibly the world’s most abundant bird in those times with the total population of almost three billion. The extinction of a bird that was once numbered in millions leaves biologists to wonder how it went extinct. The passenger pigeon is also called wild pigeon.
Passenger Pigeon Facts
- The overall length of an adult male was about 39 to 41 cm (15.4 to 16.1 in) and they weighed up to 260 and 340 g (9 and 12 oz).
- Adult females averaged 38 to 40 cm (14.9 to 15.7 in) in head-body length. It had dull colored feathers as compared to males down. However the female had a brown forehead that looked like a crown.
- Adult males had 175–210 mm (6.8–8.2 in) long tail females had 150–200 mm (5.9–7.8 in).
- The bird’s tarsus measured about 26–28 mm (1–1.1 in).
- The measurement of the male’s wing was about 196–215 mm (7.7–8.4 in) and it had 15–18 mm (0.6–0.7 in) long bill. The size of the bill was same in both males and females.
- Like many other pigeon species, the passenger pigeon was mainly recognized by its bluish-gray head and neck. There are iridescent feathers on the sides of the neck and they are bright brown to golden green in color. It goes bright when the light shines on it.
- The passenger pigeon’s tail had got some blackish spots that were clearly visible when the bird was flying.
- The legs and feet were red but the pigeon’s was completely black.
- Young pigeon appeared more like an adult female (in physical features) but unlike female it did not have spots on its wings.
- They had long pointed wings which were extremely helpful in flying fast. Passenger pigeons were adapted to not only fly fast but it could also maneuver itself rather quickly. Today pigeons lack this ability.Geographic Range & Habitat
- The passenger pigeon had occupied much of the North America including Atlantic coast in the east, Rocky Mountains, Great Plains, north of Mississippi, and south of Canada.
- They had made homes in primary habitats like deciduous forests. Passenger pigeons used to prefer forests that were abundant in white oaks.
- A large number of pigeons used to breed in the southern Ontario, Georgia, Oklahoma, Great Lakes states, North Carolina, Gulf Coast, northern Florida, and southern Pennsylvania. Passenger pigeon’s range extended as far as Bermuda, Mexico, Cuba, Ireland, and France.
- Passenger pigeons were noisy birds and they used to produce loud alarm calls such as cluck cluck or sometimes harsh sound like “kee-kee-kee-kee” or “tete! tete! tete!”.
- It was thought to be highly migratory traveling hours searching for food. The bird had long inspired the 19th century observers as it flew in flocks that could number in billions.
- The passenger pigeon’s flock was so enormous that one could not see the hint of sky while they flew.
- Pigeons used to fly as high as 1,300 ft (400 m) above the ground.
- During migration the speed at which the passenger pigeon used to travel was 62 mph (100 km/h).
- It had got the ability to maneuver itself in a narrow space and could also fly fast while going through the forests. However fast they might be in the air, passenger pigeons walked awkwardly on land.
- In those times passenger pigeons were believed to be social of all birds.
- When the entire flock needed to roost they found dense forests where the tree branches were thick enough to support the strain of million birds. Individual pigeons piled up on one another instead of sitting just next to it. As it turned out, if the branch was not strong it could break and the birds fell on land.
- They used to bathe in shallow water such as small ponds, streams, or lakes. Passenger pigeons typically bathe minutes after the day breaks.
- They used to drink once a day.
- The average lifespan of passenger pigeons was 15 years in captivity.
Feeding Ecology & Diet
- Passenger pigeons used to rely on mast that was produced from the trees of oaks and beeches. However they had a varied diet that changed seasonally.
- Passenger pigeon’s diet included grapes, mulberries, acorns, chestnuts, cherries, beechnuts, dogwoods, and pokeberries.
- In winter they relied more on nuts while in summer fruits made up much of their diet.
- Passenger pigeons also ate insects and invertebrates including worms, caterpillars, buckwheat, and snails.
- They are believed to fly 62 to 81 mi (100 to 130 km) a day from their roosting sites. Some of them could even travel 100 miles in a day.
- It could also hold many grains of corn or chestnuts in its crop. Passenger pigeons were able to eat 0.1 kg (0.22 lb) of acorns each day.
Reproductive Biology
- The nesting period lasted about 28 – 42 days. Biologists aren’t clear precisely how many times they used to mate in a year.
- Passenger pigeons used to gather on the breeding grounds from March to May.
- They had large colonies that could expand to thousands of acres but the average size was 120 acres (49 ha).
- The female chose a nesting site while the male held responsible for bringing materials and building a nest. It could take 2 – 4 days to build a complete nest. The male usually made nests with twigs.
- Nests were located 6.5 and 66 ft (2.0 and 20.1 m) above the ground and measured 6 in (15 cm) in width. The height of the nest was 2.4 in (6.1 cm) and the bowl was 0.75 in (1.9 cm) deep.
- Passenger pigeons used to mate for life.
- A female laid 1 – 2 white oval-shaped eggs. Eggs measured about 1.56 in (40 mm) by 32 in (34 mm) in size.
- Both parents incubated the eggs that lasted 12 – 14 days.
- Hatchlings were born blind and they are fed by parents for up to two weeks.
- The duration of a passenger pigeon’s nesting cycle is about one month.
- Predators of passenger pigeons were American weasels, raccoons, wolves, mountain lions, owls, hawks, bobcats, bears, American martens, and foxes. Cooper’s hawk was thought to be the main predator which could catch passenger pigeons in flight.
Pigeon Patrol Products & Services is the leading manufacturer and distributor of bird deterrent (control) products in Canada. Pigeon Patrol products have solved pest bird problems in industrial, commercial, and residential settings since 2000, by using safe and humane bird deterrents with only bird and animal friendly solutions. At Pigeon Patrol, we manufacture and offer a variety of bird deterrents, ranging from Ultra-flex Bird Spikes with UV protection, Bird Netting, 4-S Bird Gel and the best Ultrasonic and audible sound devices on the market today.
Voted Best Canadian wholesaler for Bird Deterrent products ten years in a row.
Contact us at 1- 877– 4– NO-BIRD, (604) 585-9279 or visit our website at www.pigeonpatrol.ca
Pigeon/Pigeon Patrol / Pigeons Roosting / Vancouver Pigeon Control /Bird Spikes / Bird Control / Bird Deterrent / Pigeon Deterrent? Surrey Pigeon Control / Pest /Seagull deterrent / Vancouver Pigeon Blog / Birds Inside Home / Pigeons in the cities / Ice Pigeons/ What to do about pigeons/ sparrows , Damage by Sparrows, How To Keep Raccoons Away, Why Are Raccoons Considered Pests/ De-fence / Pigeon Nesting/ Bird Droppings / Pigeon Dropping/ woodpecker control/ Professional Bird Control Company/ Keep The Birds Away/ Birds/rats/ seagull/pigeon/woodpecker/ dove/sparrow/pidgeon control/pidgeon problem/ pidgeon control/flying rats/ pigeon Problems/ bird netting/bird gel/bird spray/bird nails/ bird guard
by Pigeon Patrol | May 31, 2021 | Bird Netting, Bird Spikes, Columbidae, history of pigeons, MBCA, Pigeons, Pigeons in the News
CHICAGO – A pigeon apparently didn’t think much of a lawmaker’s ideas to address a messy situation at a Chicago Transit Authority stop known by some as “pigeon poop station.”
WBBM-TV reports that one of the birds did its business on the head of Democratic state Rep. Jaime Andrade as he was discussing the problem with a reporter outside of the Irving Park Blue Line station.
During the interview, Andrade rubbed the top of his head and said, “I think they just got me.” They did.
The sidewalks outside of the station are covered in bird waste and feathers.
Andrade has been trying to fix the problem. One of his ideas is to ask the CTA to install a hose line for power washing when it constructs new escalators at the stop.
Pigeon Patrol Products & Services is the leading manufacturer and distributor of bird deterrent (control) products in Canada. Pigeon Patrol products have solved pest bird problems in industrial, commercial, and residential settings since 2000, by using safe and humane bird deterrents with only bird and animal friendly solutions. At Pigeon Patrol, we manufacture and offer a variety of bird deterrents, ranging from Ultra-flex Bird Spikes with UV protection, Bird Netting, 4-S Bird Gel and the best Ultrasonic and audible sound devices on the market today.
Voted Best Canadian wholesaler for Bird Deterrent products ten years in a row.
Contact us at 1- 877– 4– NO-BIRD, (604) 585-9279 or visit our website at www.pigeonpatrol.ca
Pigeon/Pigeon Patrol / Pigeons Roosting / Vancouver Pigeon Control /Bird Spikes / Bird Control / Bird Deterrent / Pigeon Deterrent? Surrey Pigeon Control / Pest /Seagull deterrent / Vancouver Pigeon Blog / Birds Inside Home / Pigeons in the cities / Ice Pigeons/ What to do about pigeons/ sparrows , Damage by Sparrows, How To Keep Raccoons Away, Why Are Raccoons Considered Pests/ De-fence / Pigeon Nesting/ Bird Droppings / Pigeon Dropping/ woodpecker control/ Professional Bird Control Company/ Keep The Birds Away/ Birds/rats/ seagull/pigeon/woodpecker/ dove/sparrow/pidgeon control/pidgeon problem/ pidgeon control/flying rats/ pigeon Problems/ bird netting/bird gel/bird spray/bird nails/ bird guard
by Pigeon Patrol | May 25, 2021 | history of pigeons, pet bird, Pigeon Control, Pigeon Droppings, Pigeon Patrol's Services
Though they’re often described as “rats with wings” (a phrase popularized by the movie Stardust Memories), pigeons are actually pretty cool. From homing instincts to misleading rump feathers, here are 15 things you might not know about these avian adventurers.
1. THEY MIGHT BE THE FIRST DOMESTICATED BIRD.
The common city pigeon (Columba livia), also known as the rock pigeon, might be the first bird humankind ever domesticated. You can see them in art dating back as far as 4500 BCE in modern Iraq, and they’ve been a valuable source of food for thousands of years.
2. THEY WON OVER CHARLES DARWIN—AND NIKOLA TESLA.
Pigeon-breeding was a common hobby in Victorian England for everyone from well-off businessmen to average Joes, leading to some fantastically weird birds. Few hobbyists had more enthusiasm for the breeding process than Charles Darwin, who owned a diverse flock, joined London pigeon clubs, and hobnobbed with famous breeders. Darwin’s passion for the birds influenced his 1868 book The Variation of Animals and Plants Under Domestication, which has not one but two chapters about pigeons (dogs and cats share a single chapter).
Nikola Tesla was another great mind who enjoyed pigeons. He used to care for injured wild pigeons in his New York City hotel room. Hands down, Tesla’s favorite was a white female—about whom he once said, “I loved that pigeon, I loved her as a man loves a woman and she loved me. When she was ill, I knew and understood; she came to my room and I stayed beside her for days. I nursed her back to health. That pigeon was the joy of my life. If she needed me, nothing else mattered. As long as I had her, there was a purpose in my life.” Reportedly, he was inconsolable after she died.
3. THEY UNDERSTAND SPACE AND TIME.
In a 2017 Current Biology study, researchers showed captive pigeons a series of digital lines on a computer screen for either two or eight seconds. Some lines were short, measuring about 2.3 inches across; others were four times longer. The pigeons were trained to evaluate either the length of the line or how long it was displayed. They found that the more time a line was displayed, the longer in length the pigeon judged it to be. The reverse was true too: If the pigeons encountered a longer line, they thought it existed in time for a greater duration. Pigeons, the scientists concluded, understand the concepts of both time and space; the researchers noted “similar results have been found with humans and other primates.”
It’s thought that humans process those concepts with a brain region called the parietal cortex; pigeon brains lack that cortex, so they must have a different way of judging space and time.
4. THEY CAN FIND THEIR WAY BACK TO THE NEST FROM 1300 MILES AWAY.
The birds can do this even if they’ve been transported in isolation—with no visual, olfactory, or magnetic clues—while scientists rotate their cages so they don’t know what direction they’re traveling in. How they do this is a mystery, but people have been exploiting the pigeon’s navigational skills since at least 3000 BCE, when ancient peoples would set caged pigeons free and follow them to nearby land.
Their navigational skills also make pigeons great long-distance messengers. Sports fans in ancient Greece are said to have used trained pigeons to carry the results of the Ancient Olympics. Further east, Genghis Khan stayed in touch with his allies and enemies alike through a pigeon-based postal network.
5. THEY SAVED THOUSANDS OF HUMAN LIVES DURING WORLD WARS I AND II.
Pigeons’ homing talents continued to shape history during the 20th century. In both World Wars, rival nations had huge flocks of pigeon messengers. (America alone had 200,000 at its disposal in WWII.) By delivering critical updates, the avians saved thousands of human lives. One racing bird named Cher Ami completed a mission that led to the rescue of 194 stranded U.S. soldiers on October 4, 1918.
6. TWO PIGEONS ALMOST DISTRACTED FROM THE DISCOVERY OF EVIDENCE OF THE BIG BANG.
In 1964, scientists in Holmdel, New Jersey, heard hissing noises from their antenna that would later prove to be signals from the Big Bang. But when they first heard the sound, they thought it might be, among other things, the poop of two pigeons that were living in the antenna. “We took the pigeons, put them in a box, and mailed them as far away as we could in the company mail to a guy who fancied pigeons,” one of the scientists later recalled. “He looked at them and said these are junk pigeons and let them go and before long they were right back.” But the scientists were able to clean out the antenna and determine that they had not been the cause of the noise. The trap used to catch the birds (before they had to later be, uh, permanently removed) is on view at the Smithsonian Air & Space Museum.
7. YOU CAN TRAIN THEM TO BE ART SNOBS …
Japanese psychologist Shigeru Watanabe and two colleagues earned an Ig Nobel Prize in 1995 for training pigeons, in a lab setting, to recognize the paintings of Claude Monet and Pablo Picasso and to distinguish between the painters. The pigeons were even able to use their knowledge of impressionism and cubism to identify paintings of other artists in those movements. Later, Watanabe taught other pigeons to distinguish watercolor images from pastels. And in a 2009 experiment, captive pigeons he’d borrowed were shown almost two dozen paintings made by students at a Tokyo elementary school, and were taught which ones were considered “good” and which ones were considered “bad.” He then presented them with 10 new paintings and the avian critics managed to correctly guess which ones had earned bad grades from the school’s teacher and a panel of adults. Watanabe’s findings indicate that wild pigeons naturally categorize things on the basis of color, texture, and general appearance.
8. … AND TO DISTINGUISH WRITTEN WORDS.
In a 2016 study, scientists showed that pigeons can differentiate between strings of letters and actual words. Four of the birds built up a vocabulary of between 26 and 58 written English words, and though the birds couldn’t actually read them, they could identify visual patterns and therefore tell them apart. The birds could even identify words they hadn’t seen before.
9. FLUFFY PIGEON FEET MIGHT ACTUALLY BE PARTIAL WINGS.
A few pigeon breeds have fuzzy legs—which hobbyists call “muffs”—rather than scaly ones. According to a 2016 study, the DNA of these fluffy-footed pigeons leads their hind legs to take on some forelimb characteristics, making muffed pigeon legs look distinctly wing-like; they’re also big-boned. Not only do they have feathers, but the hindlimbs are somewhat big-boned, too. According to biologist Mike Shapiro, who led the study, “pigeons’ fancy feathered feet are partially wings.”
10. SOME PIGEONS DISTRACT FALCONS WITH WHITE RUMP FEATHERS.
In a life-or-death situation, a pigeon’s survival could depend upon its color pattern: Research has shown that wild falcons rarely go after pigeons that have a white patch of feathers just above the tail, and when the predators do target these birds, the attacks are rarely successful.
To figure out why this is, Ph.D. student Alberto Palleroni and a team tagged 5235 pigeons in the vicinity of Davis, California. Then, they monitored 1485 falcon-on-pigeon attacks over a seven-year span. The researchers found that although white-rumped pigeons comprised 20 to 25 percent of the area’s pigeon population, they represented less than 2 percent of all the observed pigeons that were killed by falcons; the vast majority of the victims had blue rumps. Palleroni and his team rounded up 756 white- and blue-rumped pigeons and swapped their rump feathers by clipping and pasting white feathers on blue rumps, and vice versa. The falcons had a much easier time spotting and catching the newly blue-rumped pigeons, while the pigeons that received the white feathers saw predation rates plummet.
Close observation revealed that the white patches distract birds of prey. In the wild, falcons dive-bomb other winged animals from above at high speeds. Some pigeons respond by rolling away in midair, and on a spiraling bird, white rump feathers can be eye-catching, which means that a patch of them may divert a hungry raptor’s focus long enough to make the carnivore miscalculate and zip right past its intended victim.
11. DODOS WERE RELATED TO TODAY’S PIGEONS.
Though most of this list focuses on the rock pigeon, there are 308 living species of pigeons and doves. Together, they make up an order of birds known as the columbiformes. The extinct dodo belonged to this group as well.
Flightless and (somewhat) docile, dodos once inhabited Mauritius, an island near Madagascar. The species had no natural predators, but when human sailors arrived with rats, dogs, cats, and pigs, it began to die out, and before the 17th century came to a close, the dodo had vanished altogether. DNA testing has confirmed that pigeons are closely related to the dodo, and the vibrant Nicobar pigeon (above) is its nearest genetic relative. A multi-colored bird with iridescent feathers, this near-threatened creature is found on small islands in the South Pacific and off Asia. Unlike the dodo, it can fly.
12. AT ONE POINT, MORE THAN ONE-QUARTER OF ALL THE BIRDS LIVING IN THE U.S. MAY HAVE BEEN PASSENGER PIGEONS.
Wild/feral rock pigeons reside in all 50 states, which makes it easy to forget that they’re invasive birds. Originally native to Eurasia and northern Africa, the species was (most likely) introduced to North America by French settlers in 1606. At the time, a different kind of columbiform—this one indigenous—was already thriving there: the passenger pigeon (Ectopistes migratorius). As many as 5 billion of them were living in America when England, Spain, and France first started colonizing, and they may have once represented anywhere from 25 to 40 percent of the total U.S. bird population. But by the early 20th century, they had become a rare sight, thanks to overhunting, habitat loss, and a possible genetic diversity issue. The last known passenger pigeon—a captive female named Martha—died on September 1, 1914.
13. THEY’RE REALLY GOOD AT MULTITASKING.
According to one study, they’re more efficient multitaskers than people are. Scientists at Ruhr-Universitat Bochum put together a test group of 15 humans and 12 pigeons and trained all of them to complete two simple jobs (like pressing a keyboard once a light bulb came on). They were also put in situations wherein they’d need to stop working on one job and switch over to another. In some trials, the participants had to make the change immediately. During these test runs, humans and pigeons switched between jobs at the same speed.
But in other trials, the test subjects were allowed to complete one assignment and then had to wait 300 milliseconds before moving on to the next job. Interestingly, in these runs, the pigeons were quicker to get started on that second task after the period ended. In the avian brain, nerve cells are more densely packed, which might enable our feathered friends to process information faster than we can under the right circumstances.
14. PIGEONS PRODUCE FAKE “MILK.”
Only mammals produce genuine milk, but pigeons and doves (along with some other species of birds) feed their young with something similar—a whitish liquid filled with nutrients, fats, antioxidants, and healthy proteins called “crop milk.” Both male and female pigeons create the milk in the crop, a section of the esophagus designed to store food temporarily. As is the case with mammal milk, the creation of crop milk is regulated by the hormone prolactin. Newly-hatched pigeons drink crop milk until they’re weaned off it after four weeks or so. (And if you’ve ever asked yourself, “Where are all the baby pigeons?” we have the answer for you right here.)
15. ONE STUDY SUGGESTS THAT, GIVEN THE RIGHT CONDITIONS, THEY’RE AS GOOD AT IDENTIFYING CANCER AS DOCTORS.
We’ve already established that pigeons are excellent at differentiating between artists and words, but a 2015 study revealed they can also distinguish between malignant and benign growths in the right conditions. Researchers at University of California Davis Medical Center put 16 pigeons in a room with magnified biopsies of potential breast cancers. If the pigeons correctly identified them as either benign or malignant, they got a treat, According to Scientific American.
“Once trained, the pigeons’ average diagnostic accuracy reached an impressive 85 percent. But when a “flock sourcing” approach was taken, in which the most common answer among all subjects was used, group accuracy climbed to a staggering 99 percent, or what would be expected from a pathologist. The pigeons were also able to apply their knowledge to novel images, showing the findings weren’t simply a result of rote memorization.”
Mammograms proved to be more of a challenge, however; the birds could memorize signs of cancer in the images they were trained on but could not identify the signs in new images.
No matter how impressive their results, “I don’t anticipate that pigeons, no matter how good they become at pathology or radiology, will be playing a role in actual patient care—certainly for the foreseeable future,” study co-author Richard M. Levenson told Scientific American. “There are just too many regulatory barriers—at least in the West.”
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Pigeon Patrol Products & Services is the leading manufacturer and distributor of bird deterrent (control) products in Canada. Pigeon Patrol products have solved pest bird problems in industrial, commercial, and residential settings since 2000, by using safe and humane bird deterrents with only bird and animal friendly solutions. At Pigeon Patrol, we manufacture and offer a variety of bird deterrents, ranging from Ultra-flex Bird Spikes with UV protection, Bird Netting, 4-S Bird Gel and the best Ultrasonic and audible sound devices on the market today.
Voted Best Canadian wholesaler for Bird Deterrent products ten years in a row.
Contact us at 1- 877– 4– NO-BIRD, (604) 585-9279 or visit our website at www.pigeonpatrol.ca
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by Pigeon Patrol | May 17, 2021 | Bird Law, Doves, history of pigeons, pet bird, Pigeon Control
Earth’s magnetic field plays a vital role in everything from animal migration to protecting the Earth from the Sun’s harsh solar wind. Now, a recent study finally sheds light on how some birds visually see Earth’s magnetic field. Birds use Earth’s magnetic field as sort of a heads-up display to help them navigate the globe.
The Earth’s magnetic field is a result of the movement or convection of liquid iron in the outer core. As the liquid metal in the outer core moves, it generates electric currents, which lead to a magnetic field. The continual movement of liquid metal through this magnetic field creates stronger electrical currents and thus a stronger magnetic field. This positive feedback loop is called the geomagnetic dynamo.
While scientists have known for quite some time that birds can see Earth’s magnetic field, it was unclear exactly how birds are able to visualize the magnetic field. Two recent studies from researchers at Lund University in Sweden and Carl von Ossietzky University Oldenburg in Germany discovered that the ability is a result of a special protein in bird’s eyes. The two papers studied European robins and zebra finches and found evidence for an unusual eye protein called Cry4.
The Cry4 protein is part of a class of protein called a cryptochrome that is sensitive to blue light. Cryptochromes are found in both plants and animals and are responsible for circadian rhythms in various species. In the two bird species above, it appears that the presence of cryptochromes, specifically the Cry4 protein, is responsible for the ability of birds to visually detect Earth’s magnetic field.
The ability to see Earth’s magnetic field, known as magnetoreception, relies on the presence of specifically the blue wavelength of light. The complex process involves “radical” intermediate molecules which are sensitive to Earth’s magnetic field. The Earth’s magnetic field, as it relates to the direction the bird is facing, could alter the intermediate radical molecules differently, giving the bird a sense for where it is facing in relation to the Earth’s magnetic field.
The research team also found that the Cry4 protein was produced in much higher amounts in European robins during migration season. Perhaps this would give the robin a more precise picture of Earth’s magnetic field throughout its migration.
While the exact way birds visualize Earth’s magnetic field is part of further investigation, scientists believe the Cry4 protein acts as sort of a filter over the bird’s vision. This filter would allow birds to see a sort of compass of the Earth and direct their migratory flights accordingly.
Scientists at the University of Illinois at Urbana-Champaign believe birds see Earth’s magnetic field through a filter similar to the figure above. This would act to guide birds in the right direction through migration.
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Pigeon Patrol Products & Services is the leading manufacturer and distributor of bird deterrent (control) products in Canada. Pigeon Patrol products have solved pest bird problems in industrial, commercial, and residential settings since 2000, by using safe and humane bird deterrents with only bird and animal friendly solutions. At Pigeon Patrol, we manufacture and offer a variety of bird deterrents, ranging from Ultra-flex Bird Spikes with UV protection, Bird Netting, 4-S Bird Gel and the best Ultrasonic and audible sound devices on the market today.
Voted Best Canadian wholesaler for Bird Deterrent products ten years in a row.
Contact us at 1- 877– 4– NO-BIRD, (604) 585-9279 or visit our website at www.pigeonpatrol.ca
Pigeon/Pigeon Patrol / Pigeons Roosting / Vancouver Pigeon Control /Bird Spikes / Bird Control / Bird Deterrent / Pigeon Deterrent? Surrey Pigeon Control / Pest /Seagull deterrent / Vancouver Pigeon Blog / Birds Inside Home / Pigeons in the cities / Ice Pigeons/ What to do about pigeons/ sparrows , Damage by Sparrows, How To Keep Raccoons Away, Why Are Raccoons Considered Pests/ De-fence / Pigeon Nesting/ Bird Droppings / Pigeon Dropping/ woodpecker control/ Professional Bird Control Company/ Keep The Birds Away/ Birds/rats/ seagull/pigeon/woodpecker/ dove/sparrow/pidgeon control/pidgeon problem/ pidgeon control/flying rats/ pigeon Problems/ bird netting/bird gel/bird spray/bird nails/ bird guard