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Few other land predators are able to reach the precarious nesting ledges .

几乎没有其他陆地食肉动物能够到达这么陡峭的筑巢的岩壁。

As of 1999 , twenty-six pairs of nesting bald eagles have been documented .

截至1999年，二十六对筑巢的秃鹰已记录在案。

However , at least you can reduce the nesting .

不管怎样，最起码你能减少嵌套了。

The survey also found that birds were altering their nesting and migration patterns , and travelling further to find food .

研究同时发现，有些鸟类的筑巢、迁徙习惯也有所改变，为了觅食，它们需要飞行更多距离。

She describes how ecosystems can be designed : nesting birds can be encouraged to breed on a site by manipulating it to suit them , for example .

她还描述了设计生态系统的方法：比如改造一块地方的环境，使之能吸引筑巢的鸟儿在那里孵化幼鸟。