Bird Wallpaper
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Bird Wallpaper
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Wallpaper Detail
- Submited:2007-01-08 16:50:24
- File Size:95360
- Resolution:1024x768
- File Format:2
- Category:Bird
- Downloads:26
- Views:161
- Number of rates:0
- Rating:0.0000
About Bird
Bird Animals - photo wallpapers; Megawallpapers.org: For other meanings of bird, see bird (disambiguation). Birds: Lemon-bellied Flycatcher; Scientific classification; Kingdom: Animalia; Phylum: Chordata; Class: Aves. Orders: Many - see section below. Birds are bipedal, warm-blooded, egg-laying vertebrates characterized primarily by feathers, forelimbs modified as wings, and hollow bones. Birds range in size from the tiny hummingbirds to the huge Ostrich and Emu. Depending on taxonomic viewpoint, there are between about 8,800-9,800 living and about 120-130 extinct bird species in the world, making them the most diverse class of terrestrial vertebrates. Birds are a very differentiated class, with some feeding on nectar, seeds, insects, rodents, fish, carrion, or other birds. Most birds are diurnal, or active during the day. Some birds, such as the owls and nightjars, are nocturnal or crepuscular (active during twilight hours). Many birds migrate long distances to utilise optimum habitats (e.g., Arctic Tern) while others spend almost all their time at sea (e.g. the Wandering Albatross). Common characteristics of birds include a bony beak with no teeth, the laying of hard-shelled eggs, high metabolic rate, and a light but strong skeleton. Most birds are characterised by flight, though the ratites are flightless, and several other species, particularly on islands, have also lost this ability. Flightless birds include the penguins, Ostrich, kiwi, and the extinct Dodo. Flightless species are vulnerable to extinction when humans or the mammals they introduce arrive in their habitat, for example the Great Auk, flightless rails, and the moa of New Zealand. Evolution: Birds are generally considered to have evolved from theropod dinosaurs. Specifically, birds are members of Maniraptora, a group of theropods which includes dromaeosaurs and oviraptorids. The exact boundary between dinosaurs and birds is unclear, especially with the recent discoveries in North-east China (Liaonin...
Bird Animals - photo wallpapers; Megawallpapers.org: For other meanings of bird, see bird (disambiguation). Birds: Lemon-bellied Flycatcher; Scientific classification; Kingdom: Animalia; Phylum: Chordata; Class: Aves. Orders: Many - see section below. Birds are bipedal, warm-blooded, egg-laying vertebrates characterized primarily by feathers, forelimbs modified as wings, and hollow bones. Birds range in size from the tiny hummingbirds to the huge Ostrich and Emu. Depending on taxonomic viewpoint, there are between about 8,800-9,800 living and about 120-130 extinct bird species in the world, making them the most diverse class of terrestrial vertebrates. Birds are a very differentiated class, with some feeding on nectar, seeds, insects, rodents, fish, carrion, or other birds. Most birds are diurnal, or active during the day. Some birds, such as the owls and nightjars, are nocturnal or crepuscular (active during twilight hours). Many birds migrate long distances to utilise optimum habitats (e.g., Arctic Tern) while others spend almost all their time at sea (e.g. the Wandering Albatross). Common characteristics of birds include a bony beak with no teeth, the laying of hard-shelled eggs, high metabolic rate, and a light but strong skeleton. Most birds are characterised by flight, though the ratites are flightless, and several other species, particularly on islands, have also lost this ability. Flightless birds include the penguins, Ostrich, kiwi, and the extinct Dodo. Flightless species are vulnerable to extinction when humans or the mammals they introduce arrive in their habitat, for example the Great Auk, flightless rails, and the moa of New Zealand. Evolution: Birds are generally considered to have evolved from theropod dinosaurs. Specifically, birds are members of Maniraptora, a group of theropods which includes dromaeosaurs and oviraptorids. The exact boundary between dinosaurs and birds is unclear, especially with the recent discoveries in North-east China (Liaonin...
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