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Police in India take pigeon into custody after bird found with note threatening PM

by Pigeon Patrol | Nov 23, 2021 | Pigeon Spikes, Pigeons, Pigeons in the News, Raccoons, Sparrows, UltraSonic Bird Control

Police in India took a pigeon into custody Monday after the bird was found carrying a warning note to the country’s Prime Minister Narendra Modi.

According to Agence France-Presse (AFP) news agency, Border Security Force (BSF) officers found the pigeon in the northern state of Punjab, where clashes between Indian and Pakistani troops have intensified.

“We took it into custody last evening,” a police investigator told the news agency. “The BSF found it with a note in Urdu saying something like ‘Modi, we’re not the same people from 1971. Now each and every child is ready to fight against India’.”

The note was apparently signed by the banned Pakistani militant group Lashkar-e-Taiba.

According to English language newspaper The Indian Express, this is the second time in just over a week a pigeon has been found with some sort of note apparently sent from Pakistan.

On Sept. 23, a bird was found in Hoshiarpur district with “some words written in Urdu,” the newspaper reported.

“We are investigating the matter,” inspector Ramesh Kumar told the Express.

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Pigeon ‘backpacks’ track flock voting

by Pigeon Patrol | Nov 23, 2021 | Bird Deterrent Products, Bird Law, Bird Netting, Bird Spikes, Columbidae, Doves

(PhysOrg.com) — Pigeon flocks are guided by a flexible system of leadership in which almost every member gets a ‘vote’ but the votes of high-ranking birds carry more weight, a new study has shown.

Scientists used GPS ‘backpacks’ to record the flight paths of individual pigeons and then analysed interactions between the birds. Their findings could help us understand the collective behaviour of other animals, including humans.

A report of the research, carried out by scientists from Oxford University and Eötvös University, Hungary, is published in this week’s Nature.

‘We are all aware of the amazing aerobatics performed by flocks of birds but how such flocks decide where to go and whether decisions are made by a dominant leader or by the group as a whole has always been a mystery,’ said Dr Dora Biro of Oxford University’s Department of Zoology, an author of the paper. ‘We found that, whilst most birds have a say in decision-making, a flexible system of ‘rank’ ensures that some birds are more likely to lead and others to follow.’

As part of the study, miniature GPS loggers weighing just 16g were fitted into custom-made backpacks carried by flocks of up to 10 homing pigeons. These enabled scientists to, for the first time, explore spatial and temporal relationships between individual birds and the movement decisions they made at the scale of a fraction of a second.

The team measured shifts in the flight direction of each bird every 0.2 seconds and tried to ‘line up’ these changes across different birds in the flock to determine who initiated any given change in direction and who followed (and with what time delay). The research revealed unexpectedly well-defined hierarchies within flocks, with a spectrum of different levels of leadership which in turn determined the influence individuals had on other birds and on the flock as a whole.

‘Crucially, these hierarchies are flexible in the sense that the leading role of any given bird can vary over time, while nonetheless remaining predictable in the long run,’ Dr Biro said. ‘This dynamic, flexible segregation of individuals into leaders and followers – where even the lower-ranking members’ opinions can make a contribution – may represent a particularly efficient form of decision-making.’

‘Whether such effects come from some individuals being more motivated to lead or being inherently better navigators, perhaps with greater navigational knowledge, is an intriguing question we don’t yet have an answer to.’

The team also discovered that a bird’s position in the flock matched its position in the hierarchy, with individuals nearer the front more likely to be responsible for decisions. Additionally, they found that followers responded more quickly to those flying on their left, confirming observations in the laboratory that suggest birds process social information – such as tracking and responding to the movements of other birds – predominantly through input that the brain receives from the left eye.

The researchers believe their findings could help unravel the decision-making process in many other groups of animals. Further studies may reveal how such a sophisticated leadership strategy confers evolutionary advantage on individuals over a strategy based on a single leader or one in which all members contribute equally to decision-making.

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Long-extinct passenger pigeon finds a place in the family tree

by Pigeon Patrol | Nov 23, 2021 | history of pigeons, MBCA, pet bird, Pigeon Control, Pigeon Droppings

With bits of DNA extracted from century-old museum specimens, researchers have found a place for the extinct passenger pigeon in the family tree of pigeons and doves, identifying for the first time this unique bird’s closest living avian relatives.

The new analysis, which appears this month in Molecular Phylogenetics and Evolution, reveals that the passenger pigeon was most closely related to other North and South American pigeons, and not to the mourning dove, as was once suspected.

Naturalists have long lamented that one of North America’s most spectacular birds was also one of the first to be driven to extinction. In the early 1800s it was the most abundant bird species on the planet, even though its range was limited to the eastern and central forests of the United States and parts of eastern Canada. Flocks of passenger pigeons were so vast they darkened the sky; it could take days for a flock to pass overhead.

“It must have been unbelievable to see one of these flocks,” said Kevin Johnson, an ornithologist with the Illinois Natural History Survey at the University of Illinois and lead author of the study. “There is nothing in modern times that we can compare it to. The passenger pigeon was very nomadic and it formed these huge flocks, in the millions, and breeding colonies in the millions.”

Passenger pigeons followed their food, settling down in forests that periodically produced a superabundance of acorns and chestnuts. The pigeons nested in dense colonies covering hundreds of acres. This made them easy targets for human predators.

Intensive hunting of the pigeons in the mid-to-late 19th century disrupted their ability to breed, Johnson said. That and habitat destruction led to the bird’s eventual extinction. (The last of her kind, a passenger pigeon named Martha, died in the Cincinnati Zoo in 1914.)

To find the passenger pigeon’s place in the evolutionary history of pigeons and doves, Johnson and his colleagues compared sequences from two of its mitochondrial genes with those of 78 species of pigeons and doves from around the world. (There are more than 300 species of pigeons and doves worldwide.)

“We had two sequences from the mitochondrial genome, which is a separate organelle in the cell that has its own genome,” Johnson said. Mitochondrial genes are plentiful and so are easier to sequence, he said. And the mitochondrial genome evolves more rapidly than the nuclear genome, making it a good target for evolutionary studies.

The researchers first analyzed the available sequence data for all (extant and extinct) pigeons and doves together. Then they focused only on the living species, for which much more genetic information is available. They built a family tree of all living pigeons and doves, and then compared the available gene sequences of the passenger pigeon to those of its relatives to find its place in that tree. Both approaches placed the passenger pigeon on the same place in the tree.

Prior to this study, some believed that the passenger pigeon was most closely related to the mourning dove, a smaller species that also has a relatively long tail, Johnson said.

“But it turns out, based on the DNA, that it’s actually related to the New World big pigeons in a totally different genus,” he said.

The band-tailed pigeon, Patagioenas fasciata, which lives in the western mountainous regions of North and South America, was the passenger pigeon’s geographically nearest relative. Other members of this genus are found in forests in parts of Mexico, Central and South America and the Caribbean.

The passenger pigeon was fairly distinct from its relatives, however, as it belonged to a separate genus, Ectopistes, Johnson said.

“The passenger pigeon is in a monotypic genus, which means there is only one species in that genus: Ectopistes migratorius,” he said. “This bird is pretty diverged from its nearest relatives, meaning it had a unique place in the world. It represented a unique lineage that’s now gone.”

The study team included Dale Clayton, of the University of Utah; John Dumbacher of the California Academy of Sciences and the Smithsonian Conservation Biology Institute; and Robert Fleischer, of the Smithsonian Conservation Biology Institute.

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Wartime hero pigeon Paddy honoured with fly-past

by Pigeon Patrol | Nov 23, 2021 | Columbidae, Doves, history of pigeons, MBCA, pet bird

One of Northern Ireland’s smallest World War II heroes has been honoured.

Paddy, a messenger pigeon who served with the RAF during the Normandy operations in June 1944, was remembered in his home town of Larne on Friday.

PDSA, Britain’s biggest veterinary charity, awarded Paddy the Dickin Medal, dubbed the animals’ “Victoria Cross”, 65 years ago this month.

He received it for being the fastest pigeon to reach England with a coded message from the battle-front beaches of Normandy.

The brave bird brought back vital information about the Allies’ progress, flying 230 miles in four hours 50 minutes – the fastest time of any of the messenger pigeons involved in the mission with an average speed of 56mph.

PDSA spokesman James Puxty said: “Paddy’s contribution to the D-Day operations was a credit to the thousands of messenger pigeons donated by the racing pigeon fraternity for service during World War II.

“He was one of 32 brave, feathered heroes that received the PDSA Dickin Medal for their life-saving flights during the war, and the only recipient from Northern Ireland.”

Local hero

Paddy was born and raised in Carnlough and joined thousands of other racing birds who were trained and drafted to RAF Hurn in Hampshire for military service.

Impressing military brass with his flying in the Air-Sea rescue units he was seconded to the United States First Army for undercover missions during the Normandy Landings.

In the face of poor weather conditions and the threat of German falcons, deployed to intercept Paddy and his comrades, he delivered his message to his home loft at RAF Hurn.

After the war Paddy returned to Carnlough and lived out his days with his owner Captain Andrew Hughes, until his death in 1954.

A memorial to the winged hero was erected in Carnlough harbour.

A feathered fly-past of pigeons formed part of the Paddy Memorial Day event held at Larne Museum and Arts Centre.

Larne Borough Council and the town’s historical society were joined by guests from PDSA and the owner of Paddy’s PDSA Dickin Medal, former Irish Army officer Kevin Spring.

Younger guests were entertained by Gail Seekamp, the children’s author, who read from her book “Paddy the Pigeon”.

The Dickin Medal was introduced in 1943 by Maria Dickin, PDSA’s founder. She wanted to recognise the gallantry and devotion to duty of animals serving with the Armed Forces and Civil Defence units during WWII.

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Airborne pigeons obey the pecking order

by Pigeon Patrol | Nov 16, 2021 | Bird Netting, Bird Spikes, Columbidae, Doves, history of pigeons, MBCA

During flight, pigeons in a flock follow the leader.

Pigeons wearing miniature backpacks containing tracking devices have revealed that the birds rapidly shift direction during flight in response to cues from the leading members of their group.

“It is the first study demonstrating hierarchical decision-making in a group of free-flying birds,” says Tamás Vicsek, a biophysicist at Eötvös Loránd University in Budapest who led the study, which is published today in Nature¹.

The discovery became possible only recently with the introduction of Global Positioning System (GPS) devices that can collect data at a high rate: five times per second. Vicsek’s team strapped lightweight GPS devices to individual pigeons and tracked flocks of up to 10 birds during free flights lasting around 12 minutes and 15-kilometre homing flights. In total, the GPS logged 32 hours of data and captured 15 group flights. The researchers couldn’t pinpoint individuals’ exact positions within a flock, but were able to accurately compare birds’ directions of motion.

Within flocks, the authors looked first at the behaviour of pairs of birds. For each possible pairing, the team identified a leader — the bird that changed direction first — and a follower, which copied the leader’s motion. Followers reacted very quickly, within a fraction of a second.

Next, the scientists constructed a network of relationships among birds in the group during each flight. They uncovered a robust pecking order: birds higher up the ranks had more influence over the group’s movements, and each individual’s level of influence was consistent across specific free and homing flights.

However, this influence was not always consistent between flights, with some rearrangement occurring among birds at the head of the flock. Vicsek speculates that this may have occurred because an original leader had tired. Co-author Dora Biro, an animal behaviour expert at the University of Oxford, UK, says, “This kind of group decision-making is more complicated than previous models suggested.”

Follow the leader

Although pigeons have an almost 340º field of view, the researchers found that the birds at the front of a flock tended to make the navigational decisions. Moreover, birds responded more readily to a leader’s movements if the leader was on their left side. These findings concur with previous work that indicated that social cues entering a bird’s left eye receive preferential processing in the brain².

“No other study has contributed more to our understanding of collective decision-making in actively homing animals, not by a long shot,” says Todd Dennis, an expert in pigeon navigation at the University of Auckland in New Zealand. He likens the birds’ group behaviour to that of a cabaret dance troupe, in which less-experienced dancers towards the rear correct themselves by watching experts at the front. “The study provides a very important model for how collective behaviour and leadership can be assessed in a range of animal groups,” he says.

The authors say that a hierarchical arrangement may foster more flexible and efficient decision-making compared with that of singly led or egalitarian groups. In future studies, the scientists plan to investigate whether leaders are better navigators, and whether hierarchies persist in larger groups and in other types of social animal. “If it’s true that there’s an evolutionary advantage to making decisions in this way, then there’s absolutely a reason to assume that it could have evolved in other species too,” Biro says.

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Police in India take pigeon into custody after bird found with note threatening PM

Pigeon ‘backpacks’ track flock voting

Long-extinct passenger pigeon finds a place in the family tree

Wartime hero pigeon Paddy honoured with fly-past

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Airborne pigeons obey the pecking order

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