"perching" birds. Birds have wings whose development varies according to species; the only known groups without wings are the extinct moa and elephant birds. Wings
“Work Without Hope”, refers to birds and bees. All Nature seems at work. Slugs leave their lair— The bees are stirring—birds are on the wing— And Winter
paternally derived X is inactivated in marsupials. In birds and some reptiles, by contrast, it is the female which is heterozygous and carries a Z and a W chromosome
appearance in The Angry Birds Movie, where she was voiced by Charli XCX. Dahlia is a tan-coloured femalebird who appears in Angry Birds Stella. She is a scientist