In many years of observing I have not noted any
ineraction between the larger cuckoos with immatures although I ve come accross
records in literature. At Gracemere near Rockhampton Q. in late May 1994 I
located a pair of Blue-faced Honeyeaters were rearing a young Koel.
This is the latest that I had seen a cuckoo being fostered.
In February 2002 in riverside
vegetation beside the Daintree an adult Gould's Bronze-cuckoo had an
immature in tow and feed it with insects on two occassions as we
watched. The young bird was begging and there was no sign of any foster
parents. This proves that they have some form of parenting instinct at
Del. Richards, Fine Feather Tours, Mossman,