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Sex-linked barring is a plumage pattern on individual feathers in chickens, which is characterized by alternating pigmented and apigmented bars. [1] The pigmented bar can either contain red pigment ( phaeomelanin ) or black pigment ( eumelanin ) whereas the apigmented bar is always white.
A frizzle refers to a plumage pattern in domesticated chickens (Gallus gallus domesticus) characterized by feathers that curl outwards, rather than lying flat as in most chickens. The frizzle type is not a separate breed, but a variety within breeds.
Pages in category "Chicken plumage patterns" The following 7 pages are in this category, out of 7 total. This list may not reflect recent changes. F.
Figure 1. Feathering types in ten-day-old chicks.Left: Fast normal-feathering chick. Right: Delayed-feathering chick carrying sex-linked K gene. Delayed-feathering in chickens is a genetically determined delay in the first weeks of feather growing, which occurs normally among the chicks of many chicken breeds and no longer manifests itself once the chicken completes adult plumage.
Solid black plumage color refers to a plumage pattern in chickens (Gallus gallus domesticus) characterized by a uniform, black color across all feathers. There are chicken breeds where the typical plumage color is black, such as Australorp , Sumatra , White-Faced Black Spanish , Jersey Giant and others.
Chickens of both sexes develop male-type plumage after gonadectomization. Strictly speaking, they develop a neutral plumage with long acute feathers, like those of male plumage, because ovarian hormone is also necessary to develop female plumage. [6] It is well known that some of the main estrogens derive from androgens.
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Early experience can influence severe feather pecking in later life. [13] [20] [21] Commercial egg-laying hens have often already begun feather pecking when they are transferred to the egg laying farm from the rearing farm at approximately 16–20 weeks of age, and plumage quality can then rapidly deteriorate until peak lay at approximately 25 weeks of age.