- Bird - Wikipedia
Archaeopteryx is often considered the oldest known true bird The first classification of birds was developed by Francis Willughby and John Ray in their 1676 volume Ornithologiae [6] Carl Linnaeus modified that work in 1758 to devise the taxonomic classification system currently in use [7] Birds are usually categorised as a biological class in traditional evolutionary taxonomy Modern
- eBird - Discover a new world of birding. . .
eBird transforms your bird sightings into science and conservation Plan trips, find birds, track your lists, explore range maps and bird migration—all free
- BIRD中文 (简体)翻译：剑桥词典 - Cambridge Dictionary
bird noun [C] (CREATURE) Add to word list A1 a creature with feathers and wings, usually able to fly
- Bird | Description, Species, Feathers, Facts | Britannica
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
- Online bird guide, bird ID help, life history, bird sounds from Cornell . . .
Use our Bird Guide to identify birds, learn about the life history, listen to the sounds, and watch bird behavior on video--the most comprehensive guide to Nort
- bird（鸟类）_百度百科
不能飞的鸟包括 企鹅 、 鸵鸟 、 几维 (一种 新西兰 产的 无翼鸟)、以及绝种的 渡渡鸟。 当 人类 或其他的 哺乳动物 侵入到他们的栖息地时，这些不能飞的鸟类将更容易遭受 灭绝，例如大的 海雀，和新西兰的 恐鸟。 bird
- Birds - Smithsonian National Museum of Natural History
Birds are found worldwide, and roughy 11,145 species are known to exist Ornithological research emcompasses many branches, including taxonomy, evolution, anatomy, ecology, conservation biology and wildlife management The Division of Birds serves the research community through the research of our scientists and stewardship of the bird collections
- Bird Pictures Facts - National Geographic
The smallest is the two-inch-long bee hummingbird Everything about the anatomy of a bird reflects its ability to fly The wings, for example, are shaped to create lift
|