A duet of coucals

The greater coucal is resident all year round, but like other members of the cuckoo tribe, becomes more prominent in spring when its hooting call resounds. In the valley of Chung Chi stream at the Chinese University of Hong Kong, coucals have been calling this month. On April 11th, a typical call was answered by a second bird at a different pitch. It turns out that like many species of bird, pairs of coucals sing duets, either together or in sequence, as on this occasion. The female, being larger than the male, has the lower-pitched call.

Posted by stephenmatthews stephenmatthews, April 19, 2021 09:57 AM

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