Page 2 of 2 < 1 2
Topic Options
#117161 - 05/01/18 05:23 AM Re: Can Dun and Dominant white be [Re: Sonoran Silkies]
Hen-Gen Offline
Ruler of the Roost

Registered: 10/01/05
Posts: 1163
Loc: Island of Fetlar, Shetland
Some dun birds look similar to chocolate birds. Others have a greyish cast which do not resemble chocolate birds at all.
_________________________
If you have nothing............
......... give it away!

Top
#117162 - 05/03/18 08:13 PM Re: Can Dun and Dominant white be [Re: Henk69]
Smooth Mule Offline
Coop Keeper

Registered: 02/13/10
Posts: 659
Loc: Missouri
But to me, they do Not look the same at all. My recessive/sex linked chocolates are a warm tone of brown. The Duns have all been a cooler tone

Top
#117164 - 05/08/18 09:27 AM Re: Can Dun and Dominant white be [Re: Smooth Mule]
Sonoran Silkies Offline
Flock Leader

Registered: 10/09/08
Posts: 347
Loc: Arizona
I've had both genotypes that were cooler or warmer in hue. I think it has to do more with silver/gold than with which kind of chocolate they are.

Top
#117168 - 05/13/18 06:26 PM Re: Can Dun and Dominant white be [Re: Sonoran Silkies]
KazJaps Offline
Classroom Professor

Registered: 08/30/02
Posts: 2864
Loc: Australia
The following from Ziehl & Hollander's 1987 paper on Dun:

Quote:
The phenomenon of black "flecking" is prominent in I/i+ chickens (Hollander, 1944) and indicates instability. By contrast, most of our dun chickens have rarely shown any flecks. The heterozygotes I/ID have shown a relatively small number of flecks, and these are dun in color.


Ref:
Ziehl & Hollander, 1987. Dun, a new plumage-color mutant at the I-locus in the fowl (Gallus gallus). IOWA STATE JOURNAL OF RESEARCH I NOVEMBER, 1987 VoL 62, No.2 337-342.

*Note, Ziehl & Hollander gave the dun mutation the symbol ID, ie capital D for dun.

Top
#117173 - 05/13/18 09:39 PM Re: Can Dun and Dominant white be [Re: Henk69]
KazJaps Offline
Classroom Professor

Registered: 08/30/02
Posts: 2864
Loc: Australia
Originally Posted By: Henk69
Chocolate is a phenotypic descriptor. Dun and choc birds look the same. The way they look should have one name... wink

Then maybe that one descriptive name should be brown (or anything that doesn't also define a known mutation) smile

Eg, that is why I don't describe the following as dun, chocolate etc anymore, now knowing they don't have ID dun or choc mutations. I just use the traditional pit game variety name "Coffee", as this name not taken by unrelated brown phenotypes with different genotypes/ mutations:

Coffee Australian pit game bantams:


And why I was happy to see the name "Mocha" used for a brownish autosomal recessive mutation that occurred in the UK (similar traits to pink-eye dilute, except eye colour usually darker & plumage a richer brown).

Top
#117174 - 05/14/18 01:31 AM Re: Can Dun and Dominant white be [Re: KazJaps]
Hen-Gen Offline
Ruler of the Roost

Registered: 10/01/05
Posts: 1163
Loc: Island of Fetlar, Shetland
Originally Posted By: KazJaps


And why I was happy to see the name "Mocha" used for a brownish autosomal recessive mutation that occurred in the UK (similar traits to pink-eye dilute, except eye colour usually darker & plumage a richer brown).


I was familiar with this mutation because it first arose in Bantam Minorcas. However I did not know that the name 'mocha' had been ascribed to it. You live and learn! grin
_________________________
If you have nothing............
......... give it away!

Top
#117175 - 05/14/18 04:15 AM Re: Can Dun and Dominant white be [Re: Hen-Gen]
KazJaps Offline
Classroom Professor

Registered: 08/30/02
Posts: 2864
Loc: Australia
Just a descriptive name. Waiting for DNA testing.... smile

Top
#117177 - 05/27/18 10:22 AM Re: Can Dun and Dominant white be [Re: KazJaps]
Smooth Mule Offline
Coop Keeper

Registered: 02/13/10
Posts: 659
Loc: Missouri
I'll be following.

Top
Page 2 of 2 < 1 2


Moderator:  Admin @ The Coop, Henk69 
Who's Online
0 registered (), 89 Guests and 3 Spiders online.
Key: Admin, Global Mod, Mod
Shout Box