How do Social Birds like corvids relate to Cuckoo Chicks

To: "" <>
Subject: How do Social Birds like corvids relate to Cuckoo Chicks
From: "Burgoyne, Robert" <>
Date: Sat, 7 Oct 2017 18:37:42 +0000
Try again -
In Alice Springs a few years ago I saw a CB Cuckoo being fed in a small tree in 
a carpark in town by 2 Torresian Crows and between that fledgling being fed it 
was also being harassed by other Toressian Crows, obviously not the parents as 
the attackers always waited for them to go off to find more food.  Fed, 
harassed, fed, harassed – quite an interesting sight!

Regards Rob B

Message: 2
Date: Sat, 7 Oct 2017 19:42:38 +1000
From: Laurie Knight <<>>
To: Birding Aus 
Subject: How do social birds like corvids relate to the
   cuckoo chicks raised by their neighbours?
Content-Type: text/plain; charset=us-ascii

Earlier this year I came across an immature CB Cuckoo sitting on a power line 
in association with its hosts. The thing was that there was quite a space 
between the CBC and the half dozen crows on the line.  I got the impression 
that the crows were uneasy with the CBC in their midst.

That got me to thinking.  Clearly cuckoo hosts can be fooled into raising 
cuckoo chicks - presumably because they are similar enough to their own young 
when they hatch.  As the chicks grow, they become less like their hosts.  The 
question is how do the non loco parentis members of the host species relate to 
the interlopers in their midst?

Regards, Laurie


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