Birding Wawushan, Sichuan
10,000 Birds
APRIL 13, 2023
One interesting paper argues that contrary to what might seem logical, cuckoos do not aim to lay eggs specifically into the nests of those parrotbills whose egg color and pattern match their own. The rationale includes the speed of the laying (too fast to check for color matches) and the low number of egg-laying attempts (i.e.,
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