Whie Goshawk, Pink Robin

To: "Michael Hunter" <>, <>, <>
Subject: Whie Goshawk, Pink Robin
From: "Greg" <>
Date: Mon, 3 Apr 2006 14:29:16 +1000
Hi Michael,

I thought that you might be interested in the difference between a 'phase' and a 'morph' with respect to bird colours. The white Goshawk that you saw would be more appropriately described as a white 'morph'. A colour 'phase' is a colouration that is not permanent, such as when an immature bird is differently coloured to the adult e.g Black-breasted Buzzard and Little Eagle, although the Little Eagle adult can be either a light (pale) morph or a dark morph, so that species has phases and morphs.

Some field guides use the term 'phase' incorrectly so it is not unexpected that many birdwatchers would be misled.

I hope that this has been of interest.


Greg Clancy

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