加州秃鹰是北美最大的鸟类，翅膀长达3米。
California condors are North America's largest birds, with wing-length of up to 3 meters.
研究的数据来自对于分布在欧洲、北美、智利、马来西亚和南非马里恩岛的鸟类、哺乳动物、爬行动物、昆虫、蜘蛛、以及植物。
The data came from studies of birds, mammals, reptiles, insects, spiders and plants in Europe, North America, Chile, Malaysia, and South Africa's Marion Island.
许多在北美温带的森林、沼泽、草地等地区繁殖的鸟类，在冬季会飞去热带的加勒比海地区或者美国的中部、南部过冬。
Many of the bird species that breed in the temperate forests, marshes and backyards of North America spend the winter months in the tropics of the Caribbean, and Central and South America.
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