Channel-billed Cuckoo

To: Birding Aus <>
Subject: Channel-billed Cuckoo
From: Chris Melrose <>
Date: Tue, 19 Dec 2017 02:24:02 +0000
Hi All
I have a few Channel-bills that have parasitised Currawong nests near my home 
on the lower north shore of Sydney. Numbers seemed to have increased over the 
years and they are even now along the Central Coast of NSW in places not 
previously seen. 
This week I can hear adults interacting vocally with fledglings, although I’m 
never in the right place at the right time to see the interaction. My question 
is: if a baby bird is known to imprint on its parents, the cuckoo should 
imprint on the Currawong when it is born, how does this imprint change for 
fledgling cuckoos so they later identify with adult cuckoos? What are the adult 
cuckoos doing when they come to visit the fledgling? And finally, why don’t 
Currawongs identify the cuckoo as an imposter?
Do birds identify with others of their species? The ones in my neighbourhood 
always tend to stick together, so what is it that allows this switching of 
identity to happen?



Christine Melrose

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