What is a bird? Well, a bird is actually a warm blooded, egg-laying vertebrate animal, that is commonly distinguished by the possession of feathers, wings, a beak, and typically the ability to fly. Despite many birds have wings, some bird species are considered flightless. Birds Encyclopedia- Glossary of Species App is divided into following categories:- Storks and Herons Albatrosses and Petrels Flightless Birds Cuckoos and Turacos Waterfowls Cranes and Relatives Kingfishers and Relatives Game Birds Nocturnal Birds Birds of Prey Pigeons and Doves Waders Gulls and Auks Parrots Woodpeckers and Toucans Learn more about this with our Bird Encyclopedia and enrich your knowledge on the beautiful wonders of mother nature and learn to identify rare birds, their behaviours and traits, their natural habitats and more.