Cuckoos would have good reason to do so, since the warblers and other small birds in whose nests they lay their eggs are understandably frightened of hawks, and give them a wide berth.

杜鹃有很好的理由去模仿鹰，由于莺和其它的小型鸟类在它们的巢中产卵，自然这些小型鸟类就很害怕鹰，并且对鹰敬而远之。

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It is usually the younger warblers that nest in these areas because the preferred spots where there are a lot of shrubs are taken by the older, more dominant birds.

通常，年轻的蓝莺将会在这些地方筑巢，因为有浓密灌木的首选的筑巢点已经被更年长的、地位更高的蓝莺所占领了。

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The young of ground-nesting warblers produce begging cheeps of higher frequencies than do their tree-nesting relatives.

相比在树上筑巢的同种类雏鸟，在地面筑巢的鸣禽雏鸟会发出频率更高的乞食叫声。

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According to the RSPB, around 650 Cetti's warblers are thought to be resident in the UK, with the majority nesting along the south coasts of England and Wales.

BBC: Cetti's warbler

Cuckoos lay their eggs in the nests of other species including dunnocks, reed warblers and meadow pipits.

BBC: Manx birdwatchers asked to listen out for cuckoos

The habitat is already attracting birds such as sedge and reed warblers, cuckoo, snipe, woodcock and oystercatcher.

BBC: Little Ouse Headwaters Project restores Suffolk fenland