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The first division of classification is into Kingdom. Birds are classified into the Kingdom Animalia (i.e. Animals). The kingdom is further divided into the Phylum. Birds are in the Phylum Chordata (Animals with a backbone). Next in classification is the Class. The Class for birds is Aves.
Birds are a group of warm-blooded vertebrates constituting the class Aves ( / ˈeɪviːz / ), characterised by feathers, toothless beaked jaws, the laying of hard-shelled eggs, a high metabolic rate, a four-chambered heart, and a strong yet lightweight skeleton.
- Ostriches (Struthioniformes) Ostriches are the giants among our feathered friends, weighing 220 to 350 pounds. They have the largest eyes of any mammal on earth regarding their body ratio and lay the biggest eggs of any type of bird.
- Rheas (Rheiformes) Rheas look like ostriches and are even called South American ostriches. This omnivorous bird type weighs up to 50 pounds, making them the largest South American bird where they are native.
- Kiwis (Apterygiformes) Another flightless type of bird is the New Zealand national bird called a kiwi. These birds are special enough for New Zealanders to be called kiwis.
- Tinamous (Tinamiformes) Tinamous fall into the Palaeognathae types of birds, but they can fly partially, unlike their ostrich, rhea, and kiwi friends.
Browse North American birds in taxonomic order—by order and family, with quick access to each bird’s photos and sounds.
66 species in 6 families worldwide, including cormorants, boobies, gannets, tropic birds, and frigate birds. Water birds with all 4 toes webbed; bill hooked or straight and sharply pointed; length 48–188 cm (19–74 inches).
3 days ago · Bird, any of the more than 10,400 living species unique in having feathers, the major characteristic that distinguishes them from other animals. They are warm-blooded vertebrates more related to reptiles than mammals. Learn more about birds in this article.
Mar 6, 2024 · Kingdom: Animalia: Birds belong to the kingdom Animalia, which encompasses all multicellular organisms capable of movement and heterotrophic nutrition. Within this kingdom, birds are distinguished by their possession of feathers, beaks, and wings, as well as other avian characteristics.
