birding-aus Yellow-tailed Black Cockatoo mutation

Subject: birding-aus Yellow-tailed Black Cockatoo mutation
From: "Marc Anderson" <>
Date: Mon, 08 Mar 1999 23:31:10 PST

 On the 18/2/99 on the road to Maryborough(off rd to Tin Can Bay & 
Rainbow Beach, SE QLD)I witnessed several small flocks of Yellow-tailed 
Black Cockatoos feeding on the local pine plantations.As a flock of 
approx. 12 birds flew across the road in front of me, I noticed one of 
the birds partly, if not predominately had it's plumage mottled with 
yellow feathers.The bird was only in view for a few seconds & could not 
be located afterwards.
 I am familiar with genetic mutations like this in aviculture, such as 
'pieds', although pieds usually exhibit abnormal white feathers.Has 
anyone else seen something similar in the field? 

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