"black and white" thing

To: "'David Rosalky'" <>, <>
Subject: "black and white" thing
From: "Philip Veerman" <>
Date: Tue, 3 Sep 2013 18:38:04 +1000
Many years ago Alec Chisholm devoted a chapter of a book of his to this "black and white” thing and that it is a notable feature of Australian birds. Sure WW are aggressive, as are many birds when defending a nest and some black and white ones are notably so to other black and white birds. But WW are aggressive to most raptors (which are mostly not pied). I mentioned this in The GBS Report under the Magpie-lark text. In that case I expect that probably when they have high hormone levels they interpret Magpies as a supernormal version of themselves and harass them for the same reason that other birds attach reflections of themselves.
-----Original Message-----
From: David Rosalky [
Sent: Monday, 2 September 2013 6:51 PM
Subject: RE: [canberrabirds] 3 x baillon's crake 4 x Quail BSK under attack by wagtail Jerra Wetlands

Kym Bradley wrote:


Not long before a Wagtail was attempting to attack a Black Shouldered Kite


Is this the “black and white” thing again?


David R


PS Great photos as usual, Kym


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