Bird's Nest Sponge
Birds are feathered, winged, bipedal, warm-blooded, egg-laying animals. Birds may also refer to: Literature * The Birds (play), ''The Birds'' (play), an ancient Greek play by Aristophanes * The Birds (novel), ''The Birds'' (novel), a novel by Tarjei Vesaas * The Birds (story), "The Birds" (story), a 1952 story by Daphne du Maurier * ''Birds'', the magazine of the Royal Society for the Protection of Birds * ''The Birds'', a musical play by David Cerda and Pauline Pang Film * The Birds (film), ''The Birds'' (film), a 1963 Alfred Hitchcock film Music * The Birds (band), a 1960s UK rhythm and blues band * The Birds (Respighi), ''The Birds'' (Respighi) or ''Gli Uccelli'', a suite for small orchestra by Ottorino Respighi Albums * Birds (Bic Runga album), ''Birds'' (Bic Runga album) (2005) * Birds (North Sea Radio Orchestra album), ''Birds'' (North Sea Radio Orchestra album) (2008) * Birds (Marius Neset album), ''Birds'' (Marius Neset album) (2013 album) Songs * Birds (Kate Nash song ...
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Bird
Birds are a group of warm-blooded vertebrates constituting the class Aves (), 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. Birds live worldwide and range in size from the bee hummingbird to the ostrich. There are about ten thousand living species, more than half of which are passerine, or "perching" birds. Birds have whose development varies according to species; the only known groups without wings are the extinct moa and elephant birds. Wings, which are modified forelimbs, gave birds the ability to fly, although further evolution has led to the loss of flight in some birds, including ratites, penguins, and diverse endemic island species. The digestive and respiratory systems of birds are also uniquely adapted for flight. Some bird species of aquatic environments, particularly seabirds and some waterbirds, have further evolved for swimming. B ...
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