Birds (class Aves) are feathered, winged, bipedal, endothermic (warm-blooded), egg-laying, vertebrate animals. With around 10,000 living species, they are the most speciose class of tetrapod vertebrates. All present species belong to the subclass Neornithes, and inhabit ecosystems across the globe, from the Arctic to the Antarctic. Extant birds range in size from the 5 cm (2 in) Bee Hummingbird to the 2.75 m (9 ft) Ostrich. The fossil record indicates that birds emerged within theropod dinosaurs during the Jurassic period, around 160 million years (Ma) ago. Paleontologists regard birds as the only clade of dinosaurs to have survived the Cretaceous–Paleogene extinction event 65.5 Ma (million years) ago.
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Some articles on bird:
... b/w "Deep Water" "Kickapoo Joy Juice" b/w "My Reward" "Mama-Oom-Mow-Mow (The Bird)" b/w "Waiting" "The Bird's The Word" b/w "I'm Losing My Grip" "The Shaky Bird (Part 1 ...
... The Gurney's Pitta, Pitta gurneyi, is a medium-sized passerine bird ... This beautiful bird has a blue crown and black-and-yellow underparts ... The name of this bird commemorates the English ornithologist John Henry Gurney ...
... Generally speaking, bird strikes (when an aeroplane flies into a bird, the impact can cause severe damage from a bird striking the fuselage, engine, etc ... Bird strikes are treated separately ...
... After he discovered his custard was popular, Bird formed Alfred Bird and Sons Ltd ... In World War I, Bird's Custard was supplied to the British armed forces ... The famous 'three bird' logo, however, was relatively late in arriving, only introduced in 1929 ...
... Main article Bird conservation See also Late Quaternary prehistoric birds, List of extinct birds, and Raptor conservation Though human activities have allowed the expansion of a few species, such ... Over a hundred bird species have gone extinct in historical times, although the most dramatic human-caused avian extinctions, eradicating an estimated 750 ... Many bird populations are declining worldwide, with 1,227 species listed as threatened by Birdlife International and the IUCN in 2009 ...
More definitions of "bird":
- (noun): Warm-blooded egg-laying vertebrates characterized by feathers and forelimbs modified as wings.
- (verb): Watch and study birds in their natural habitat.
- (noun): A cry or noise made to express displeasure or contempt.
Synonyms: boo, hoot, Bronx cheer, hiss, raspberry, razzing, snort
Famous quotes containing the word bird:
“Boredom is the dream bird that hatches the egg of experience. A rustling in the leaves drives him away.”
—Walter Benjamin (18921940)