Much can be learned about flying in an attempt to imitate the bird, but also when differentiating from its exact behavior or appearance.

通过模仿鸟的飞行可以学到很多飞行方面的技术，但无法学到其精确的分辨能力。

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The caged bird flapped its wings in a vain attempt to fly away.

笼子哩的鸟拍打着翅膀想飞走，但却徒劳无功。

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The nest was daubed with white paint in an attempt to imitate bird droppings, so the birds would think it was an established nesting site.

BBC: Osprey moves into man-made nest

BirdLife describes the survey as "the first-ever attempt to list all the sites internationally recognised as the most critically important places for bird and biodiversity conservation in the region".

BBC: Africa's birds face farming threat