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Their influence on the ecosystem earns them the title of keystone species.
它们对生态系统的影响让它们赢得关键物种的头衔
Big Sur attracts many unique creatures.
大索尔吸引着许多独特的动物
California condors rely on an aerial view.
加州秃鹫依赖气流翱翔
Until recently, only a handful of these Pleistocene relics were still alive on Earth.
直到最近,才发现有少数更新世遗孤依然存活在地球上
Big Sur now boasts about 80 of the huge scavengers.
大索尔现在生活着约80中食腐动物
Every adult bird wears a number and a GPS device so that scientists can monitor their lives.
每只成鸟都带着号码牌和GPS装置因此,科学家便能了解它们的一举一动
Condors mate for life-- but they don't build nests.
秃鹫与配偶厮守终生-- 但它们不筑巢
The same ledge or hole is used every two years, for a single egg.
同样的岩壁或洞穴它们只使用2年并择地产卵
This is some of the first footage captured inside a wild nest.
这是第一个用镜头捕捉的野外巢穴
The camera was placed by biologists who hope to discover which condors make good parents--and why.
该摄像机的安置是科学家希望探寻秃鹫如何做一个好父母--且为什么这么做
But, while condors are devoted to their families,
但是,尽管秃鹫于家庭勤勤恳恳
they largely depend upon humans for their food.
而它们的食物很大程度上取决于人类
