Mandyam Srinivasan at the University of Queensland, Australia, and his colleagues uncovered the simple trick when filming pairs of budgerigars flying towards each other in a narrow tunnel. (newscientist.com)
Budgies, also known as Budgerigars birds, eat fruits, vegetation, seeds and berries in the wild as well as in captivity as pet birds. (reference.com)
Below it hangs a painting of a birdcage that might almost be a house, by Gwen John, and an anonymous photo of someone's dead pet budgerigar lying in state. (theguardian.com)