1 in 10000 chickens develops as female on one side and male on the other.
Horse-sized ducks lived in Australia 50,000 to 20,000 years ago. And if we’re going back in time, you might want to look at Hyracotherium, which was an early ancestor of modern horses. About 2 feet long and 8-14 inches tall; the size of a large duck. So we have historical evidence of both Horse-sized ducks, and Duck-sized horses.
Students studying crows at the University of Washington wore wigs and masks because the crows would remember their faces and harass them for the remainder of their college career.
Hollywood has had a population of feral chickens living under a freeway since the 70s. Nobody knows how they got there and all efforts to remove them have failed.
A species of bird known as the Shrike impales all of its prey so that it can return and feed whenever it wants.
The last words of Alex the Parrot to his caretaker was “You be good, see you tomorrow, I love you”.
NASA cannot bring birds into space because birds need gravity to swallow.
Magpies hold funerals for their dead.
There are wild birds in Australia that can mimic the sound of cameras, car alarms, and chainsaws.
Turkey Vultures “urinate” on their own legs in order to stay cool and kill any lingering bacteria from previous meals.