A selection of fork-tailed drongo clutches that have been parasitised by African cuckoos. In each photo, the right-most egg is the cuckoo egg (IMAGE)

University of Cambridge

A selection of fork-tailed drongo clutches that have been parasitised by African cuckoos. In each photo, the right-most egg is the cuckoo egg

Caption

A selection of fork-tailed drongo clutches that have been parasitised by African cuckoos. In each photo, the right-most egg is the cuckoo egg

Credit

Claire Spottiswoode

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