深色型 © Bruce Ward-Smith eBird S61219405 Macaulay Library ML 186307371
淺色型成鳥 © Jim Hully
深色型 © Marco Valentini
深色型 © Simon Carter
中等色型成鳥 © Phil Stouffer

Black Cuckoo Cuculus clamosus

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辨識

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This large cuckoo has two morphs: (1) entirely black except for white tips to the long tail and sometimes limited white barring elsewhere, and (2) dark-backed with a rufous chest and black-and-white-barred underparts. The latter are more frequently found in West Central Africa. It has a characteristically swerving flight. It is resident and migrant, preferring thicker woodland and forest, It produces a mournful, three-noted call “I’m so saaaaad” call, the last note rising. Similar dark-morph Jacobin and Levaillant’s cuckoos differ from Black Cuckoo in having crests and strong white flashes in the wings.

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