Now, Stagno is on a mission to document the most unusual of their kind, entirely without favouritism. "I don't have any favourite pigeon, because I find them all very beautiful," she says.

Since flying without a vertical tail is much more energy ... has developed a robotic bird model with real pigeon feathers to show how they do it. In previous work, he found that birds continuously ...

Can the pollution level of a city be judged by pigeon feathers? Yes, if research done at a university here is to be believed. Can the pollution level of a city be judged by pigeon feathers?