Geoffrey, how browner does the plumage look compared to an adult, and how
much is this bird affected by your flash (assuming that the glint in his eye is
flash)?
The guides say young ones have a grey eye
ring, similar to an adult female, and the plumage is browner with the pale
feather margins more prominent.
I remember delivering a road-killed YTBC
to Dick Schodde at the ANWC. It looked like a young brown-ish bird to me. Dick, without even blinking,
said it was a young male. I can’t remember how he picked the sex of a
young one.
Anthony
-----Original Message-----
From: Geoffrey Dabb
[
Sent: Monday, 19 February 2007
10:34 AM
To: 'Cog line'
Subject: RE: [canberrabirds] Black
Cockatoos
This was a snap of
the ‘begging young’ last week. Apart from the noise, it can
be distinguished by the relatively short tail.