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Mongolia, August. Juvenile Cuckoo ? (1 Viewer)
- Thread starter djolof
- Start date
sicklebill
well-known Cretaceous relic
Either that or OrientalCuckoo, doubt they can be separated in this plumage
Grahame Walbridge
Well-known member
They can be separated (all age classes) but only from good images of the underwing enabling counting of the pale bars to the outer primaries. There are other supportive characters, including shape of bars and colour/pattern of pattern of underwing coverts.
See https://helda.helsinki.fi/server/api/core/bitstreams/2abe0ebf-91a0-42fc-a9d2-d6ee774b0b60/content
In this instance, agree Cuculus sp., Common/Oriental.
Grahame
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