RE: [Genetics-Psittacine] Re: Odd markings - more feather pictures
I've noticed these spots on grey cockatiel hens going back to the early 80's and considered it a normal part of their markings, you never see it on adult males. We called it marbling. Some hens seem to have more or less of it. If you look at Red-tailed black cockatoo hens they have all sorts of spots also. Cockatiels are closely related to the Red-tailed black.
> To: Genetics-Psittacine@yahoogroups.com
> From: tielfan@...
> Date: Wed, 1 Jul 2009 01:22:33 +0000
> Subject: [Genetics-Psittacine] Re: Odd markings - more feather pictures
> --- In Genetics-Psittacine@yahoogroups.com, "rose_2783" <rose_2783@...> wrote:
> > I have a Yellow Cheek that has these same spots on the chest, I will
> > take a picture in a few days and post them.
> > Rose
> Thanks! Anything you can tell us about the genetics of your spotted birds will add to the data base.
> and her cockatiels:
> Vlad, Shodu, Mims, and Buster
> Teela, Squeebis, and Snowy (children of Shodu and Buster)
> + a changing cast of chicks
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- Thanks Rick. I've heard thrush chest mentioned before, but the description in Smith's book is kind of vague and I wasn't sure it was the same condition. Incidentally his book says it's dominant (page 228 in my copy) but if it really is the same thing then recessive is more consistent with the number of spotted chicks I'm getting. It wasn't until I saw Pippin's spots that I began to see how thrush chest might be a reasonable name for these markings - Shodu and Squeebis didn't look very thrushlike.
Why is there so little recognition of this mutation? It's true that some birds' spots don't look like much, but there are some birds with very attractive markings. If it was developed it would make a nice addition to the cockatiel color palette.
and her cockatiels:
Vlad, Shodu, Mims, and Buster
Teela, Squeebis, and Snowy (children of Shodu and Buster)
+ a changing cast of chicks