DNA based lumps, splits and IDs

To: "Birding Aus" <>
Subject: DNA based lumps, splits and IDs
From: L&L Knight <>
Date: Fri, 23 Feb 2007 15:01:41 +1000
When I was on Ashmore Reef last year, I came across a nest with a pair of reef egret chicks - one was a grey morph and the other was a white
morph .  They seemed to be the same size, and I assumed they were
siblings, rather than one chick visiting another.

Regards, Laurie.

On Friday, February 23, 2007, at 02:57  PM, Dave Torr wrote:

Thanks - exposing my ignorance further - do different colour morphs

On 23/02/07, L&L Knight < > wrote:

G'day Dave,

Consider the Eastern Reef Egrets and Grey Goshawks that both have grey
and white morphs.  Similarly, many sea birds have pale, intermediate
and dark morphs.

It's a bit like people having different hair, skin and eye colours.  I
think we place too much emphasis on bird plumage, which is why we get
so thrown by immature, moulting and leucoplastic birds.  Just a bit of
different colour can get us thinking we are seeing a different species

Regards, Laurie.

On Friday, February 23, 2007, at 02:30  PM, Dave Torr wrote:

> Maybe I'm missing something (and I'm no expert on DNA!). The
> on "splits" shows a number of what I have always thought of as "good"
> species anyway, with no indication of what they have been split from
> (or what has been split from them).
> And the DNA lumps shows Blue-winged Teal and Cinnamon Teal to be 100%
> similar - yet visually at least they are very different...... Since as
> a "layman" I assumed DNA controlled the appearance of an animal how
> can this be the case?
> Please excuse the ignorance but I would love someone to explain in
> simple terms.....

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