Brahma not developing adult plumage?

Posted by: 6Happiness

Brahma not developing adult plumage? - 06/17/17 06:58 PM

I have two light Brahmas that were hatched early april. Both are developing in regards to size/muscles etc except that one is still in chick down and not developing adult plumage. Both have the same care / food / etc and I've watched them a lot and know the one is not being picked on / having feathers pulled. I assume its genetic... but what? Reminds me of some strains of hairless rats that retain 'fuzz' but the featherless chickens I've googled for are all photos of adults with no feathers- I don't know if the down will stay or go and this bird end up featherless or not. Has anyone seen this before?

Here are photos of the two brahmas (hatch mates). This pics were taken around 11 june, and they were hatched 4 april so they are about 2+ months old.

http://fithfath.com/farm/wp-content/uploads/2017/06/Brahma_Light_RooChicks_Feather_Condition_002.jpg

http://fithfath.com/farm/wp-content/uplo...ition_Wings.jpg

Close up of the affected chick without hatchmate:
http://fithfath.com/farm/wp-content/uploads/2017/06/Brahma_Light_RooChicks_Feather_Condition_001.jpg
Posted by: 6Happiness

Re: Brahma not developing adult plumage? - 06/17/17 08:57 PM

Hmmm, could this just be extreme slow feathering? I know slow feathering is used to sex some breeds like this one, and the hatch mate was slow feathering, but I didn't expect to have two forms in the same flock. And I've never seen the extreme form befor. If that is what it is, is there anything to be concerned about, or will he eventually look normal... eventually?
Posted by: Hen-Gen

Re: Brahma not developing adult plumage? - 06/18/17 02:21 AM

This is completely out with my experience. I delved into Crawfords book on poultry genetics and though various forms of restricted feather growth exist none of them appear to conform to your experience. Indeed the most extreme form is semi lethal with most chicks dying at a younger age than yours or having restricted body growth rates.
So I can't shed any light on this but please keep us informed of the chicks progress.
Posted by: Wieslaw

Re: Brahma not developing adult plumage? - 06/18/17 02:22 PM

As far as I understand the N in K^N is supposed to mean naked. If it is the only bird ever in your flock to have it, it can mean a mutation happened(identical or similar). I have found a site (though totally unknown to me, so I don't know the original source) where the text says :

"Kn also has other pleiotropic effects, as a reduction in comb size and hypertrophy of the uropygial gland"

https://www.revolvy.com/main/index.php?s=Delayed%20feathering%20in%20chickens
Posted by: 6Happiness

Re: Brahma not developing adult plumage? - 06/18/17 08:25 PM

Darn, I was hoping someone had seen it before and could assure me of what to expect. Well firsts for everything. So far he is acting and looking normal, except for the feathering, so hopefully he will remain healthy. I'll post an update if his health changes or to show off what he looks like as an adult.
Posted by: 6Happiness

Re: Brahma not developing adult plumage? - 06/26/17 11:11 PM

Quick update with more photos.... the mutant boy is continuing to develop normally (spare his feathering) and has not shown any health or behavioural problems. We've named him 'Kreacher'.

The original photos posted were from the 11th. The following set are from the 25th, so 2 weeks later (just shy of 3 months of age come 4 July). I find it interesting that while he is losing down feathers, and failing to grow adult plumage almost everywhere... he is growing hackle feathers... almost a reverse of the 'naked neck' look.

http://fithfath.com/farm/wp-content/uploads/2017/06/Brahma_Light_RooChicks_Feather_Condition_003.jpg

http://fithfath.com/farm/wp-content/uploads/2017/06/Brahma_Light_RooChicks_Feather_Condition_004.jpg

http://fithfath.com/farm/wp-content/uplo...ition_Wing2.jpg


Posted by: Wieslaw

Re: Brahma not developing adult plumage? - 06/28/17 04:58 AM

Thank you for the update. Keep them coming.
Posted by: Smooth Mule

Re: Brahma not developing adult plumage? - 06/28/17 02:53 PM

Wow, following
Posted by: Hen-Gen

Re: Brahma not developing adult plumage? - 06/29/17 01:06 AM

Ditto. Dogs, yeah, cats, yeah. But chickens, never.
Posted by: Wieslaw

Re: Brahma not developing adult plumage? - 07/04/17 07:06 AM

Originally Posted By: 6Happiness
Quick update with more photos.... the mutant boy is continuing to develop normally (spare his feathering) and has not shown any health or behavioural problems. We've named him 'Kreacher'.

he is growing hackle feathers... almost a reverse of the 'naked neck' look.




Pity it's not a crest instead. You could make a video with him , dancing to "You Can Leave Your Hat On"

blush
Posted by: 6Happiness

Re: Brahma not developing adult plumage? - 11/06/17 11:01 PM

Sadly he died a couple months ago. No visible signs of failing health, no signs of accidents/injuries, etc. Shoulda done a post mort but been having a bad time with arthritis and he was not part of my breeding program.
So I don't know, maybe it was a delay lethal feathering variation. Or maybe the death was a coincidence.
Posted by: Wieslaw

Re: Brahma not developing adult plumage? - 11/08/17 12:41 PM

Pity.

I have come across a funny video, I think you should all see it

https://www.youtube.com/watch?v=MzIQWUlH0Bk