File:White Morph Reddish Egret (8364354477).jpg

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Now here is a bird that is not well-studied. I was interested to understand the genetics of the white morph and how it exists even though they must mate with the dark morphs as there are very few whites around, especially in Florida. Two dark morph birds can have white morph chicks, but two white morph birds can never have dark morph chicks. When a dark morph bird and a white morph bird mate, their chicks are almost always dark morph. See Khurram 1977's comment on recessive genes below.

There are estimated to be 1,500-2,000 nesting pairs of reddish egrets in the US, mostly in Texas. In Texas they believe 10-20% of their reddish egrets are white morphs. Anecdotally, I think there are fewer than 10% white morphs in Florida. Last time this was studied, in the 1950's, just 4% of US reddish egrets were white morphs. So, my estimate is that there are probably 500-600 white morphs in the US today.
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Source White Morph Reddish Egret
Author Andy Morffew from Itchen Abbas, Hampshire, UK

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This image was originally posted to Flickr by Andy Morffew at https://flickr.com/photos/66020093@N03/8364354477. It was reviewed on 10 November 2021 by FlickreviewR 2 and was confirmed to be licensed under the terms of the cc-by-2.0.

10 November 2021

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current22:40, 10 November 2021Thumbnail for version as of 22:40, 10 November 20211,942 × 1,295 (1.55 MB)Vis M (talk | contribs)Transferred from Flickr via #flickr2commons

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