Lay Summary We provide experimental evidence to confirm that the common cuckoo (Cuculus canorus) locates its Oriental reed warbler (Acrocephalus orientalis) host nests by monitoring the activities of nest owners.… Click to show full abstract
Lay Summary We provide experimental evidence to confirm that the common cuckoo (Cuculus canorus) locates its Oriental reed warbler (Acrocephalus orientalis) host nests by monitoring the activities of nest owners. Cuckoos distinguished between nest types of different host species and choose to parasitize nests of the most commonly parasitized host, while cuckoos did not choose to lay eggs in nests matching the appearance of their own eggs.
               
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