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#116678 - 06/17/17 06:58 PM Brahma not developing adult plumage?
6Happiness Offline
Feather

Registered: 02/25/11
Posts: 21
Loc: IL, USA
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
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#116679 - 06/17/17 08:57 PM Re: Brahma not developing adult plumage? [Re: 6Happiness]
6Happiness Offline
Feather

Registered: 02/25/11
Posts: 21
Loc: IL, USA
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?


Edited by 6Happiness (06/17/17 08:59 PM)
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#116680 - 06/18/17 02:21 AM Re: Brahma not developing adult plumage? [Re: 6Happiness]
Hen-Gen Online   content
Ruler of the Roost

Registered: 10/01/05
Posts: 1140
Loc: Island of Fetlar, Shetland
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.
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#116681 - 06/18/17 02:22 PM Re: Brahma not developing adult plumage? [Re: Hen-Gen]
Wieslaw Offline
Moderator
Classroom Professor

Registered: 09/18/09
Posts: 3757
Loc: Denmark
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

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#116682 - 06/18/17 08:25 PM Re: Brahma not developing adult plumage? [Re: Wieslaw]
6Happiness Offline
Feather

Registered: 02/25/11
Posts: 21
Loc: IL, USA
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.
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#116695 - 06/26/17 11:11 PM Re: Brahma not developing adult plumage? [Re: 6Happiness]
6Happiness Offline
Feather

Registered: 02/25/11
Posts: 21
Loc: IL, USA
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




Edited by 6Happiness (06/26/17 11:12 PM)
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http://fithfath.com/farm
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#116696 - 06/28/17 04:58 AM Re: Brahma not developing adult plumage? [Re: 6Happiness]
Wieslaw Offline
Moderator
Classroom Professor

Registered: 09/18/09
Posts: 3757
Loc: Denmark
Thank you for the update. Keep them coming.

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#116698 - 06/28/17 02:53 PM Re: Brahma not developing adult plumage? [Re: Wieslaw]
Smooth Mule Online   content
Coop Keeper

Registered: 02/13/10
Posts: 628
Loc: Missouri
Wow, following

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#116699 - 06/29/17 01:06 AM Re: Brahma not developing adult plumage? [Re: Smooth Mule]
Hen-Gen Online   content
Ruler of the Roost

Registered: 10/01/05
Posts: 1140
Loc: Island of Fetlar, Shetland
Ditto. Dogs, yeah, cats, yeah. But chickens, never.
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#116732 - 07/04/17 07:06 AM Re: Brahma not developing adult plumage? [Re: 6Happiness]
Wieslaw Offline
Moderator
Classroom Professor

Registered: 09/18/09
Posts: 3757
Loc: Denmark
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

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