The warbler hatched the cuckoo egg and raises the chick as if it were her own.
Cuckoos’ resemblance to small predators may aid nest plunder
By Adam Marcus
Cuckoos are notorious freeloaders, conning other species into rearing their young, often at the expense of the hosts’ chicks. But a new study suggests that the parasitic birds are not mere opportunistsLike thieves who yell “fire” to clear a store before robbing it, cuckoos appear to have evolved hawklike plumage patterns and physical traits that temporarily scare potential hosts from their nests so they can lay eggs in them and get other birds to rear them.
Bird experts have long noted that Old World cuckoos resemble certain small hawks. …
—-> CLICK HERE to go to the whole article. It’s fascinating!
More Cuckoo Links
Cuckoos and Allies (fabulous photos) http://montereybay.com/creagrus/cuckoos.html
This one talks about North American cuckoos who don’t do this enforced nanny trick! http://www.borealforest.org/world/birds/black_billed_cuckoo.htm