DNA sexing needed

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FinchsRUS
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Re: DNA sexing needed

Post by FinchsRUS » Fri Sep 02, 2016 9:55 pm

Sally wrote: Could this bird be darker because of melanism? Strawberries are very prone to melanism when they don't have exposure to natural sunlight.
Maybe??? I have (him) in a cage next to my linny parakeet so it is possible it's darker from the lack of sunlight. I'll move him next to a window and see what happens.

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Re: DNA sexing needed

Post by FinchsRUS » Fri Sep 02, 2016 10:00 pm

It would have laid an egg by now if it were a female right? It's well over a year old.

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Sally
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Re: DNA sexing needed

Post by Sally » Fri Sep 02, 2016 10:08 pm

I would think it would have, though I have had hens that are very reluctant or slow to lay eggs, perhaps they don't like the male I picked out for them. :wink: Placing him near a window probably won't help, as modern windows are treated to cut out the UV rays, which is what birds need.
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Re: DNA sexing needed

Post by Sojourner » Sun Sep 04, 2016 7:56 pm

Sally wrote: Could this bird be darker because of melanism? Strawberries are very prone to melanism when they don't have exposure to natural sunlight.
I thought melanism was a permanent condition like albinism, only with too much rather than not enough melanin?
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Re: DNA sexing needed

Post by cindy » Sun Sep 04, 2016 9:01 pm

FinchsRUS wrote:
Sally wrote: Could this bird be darker because of melanism? Strawberries are very prone to melanism when they don't have exposure to natural sunlight.
Maybe??? I have (him) in a cage next to my linny parakeet so it is possible it's darker from the lack of sunlight. I'll move him next to a window and see what happens.
Direct unfilter sun (not through glass) or D3 supplements will help. Are you using vitamin mineral supplements such as powdered vitamins in soft food or water or pellets?

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Sally
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Re: DNA sexing needed

Post by Sally » Sun Sep 04, 2016 10:47 pm

Sojourner wrote:
Sally wrote: Could this bird be darker because of melanism? Strawberries are very prone to melanism when they don't have exposure to natural sunlight.
I thought melanism was a permanent condition like albinism, only with too much rather than not enough melanin?
This is from the Finch Information Center:

Captive birds are prone to induced melanism--likely related to dietary and vitamin D deficiency--and apparently require exposure to warmth, sunshine, a proper diet, and adequate moisture to maintain their bright red plumage in later molts.

Robert Black wrote an article on Strawberry finches in which he said that he started putting his Strawberry finches in outdoor aviaries during the summer. Each year, he noticed that when the males molted into their breeding plumage, they were brighter and redder. After three years of sun exposure, he said the male's colors were spectacular (or some such wording).

Strawberry finches kept indoors are more likely to have this induced melanism than many other species.
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