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Barred cock and hen, illustration from Jean Bungartz, Geflügel-Album, 1885 Egg. The Plymouth Rock is an American breed of domestic chicken.It was first seen in Massachusetts in the nineteenth century and for much of the early twentieth century was the most widely kept chicken breed in the United States.
Breeders and fanciers of chickens accurately describe the colours and patterns [1] of the feathers of chicken breeds and varieties. This is a list of the terms used in this context. This is a list of the terms used in this context.
The B1 allele is causing the typical sex-linked barring phenotype/ appearance and is present in most modern sex-linked barred chicken breeds. Females or male chickens carrying the B2 allele in the heterozygous condition show a defined barring pattern but in the homozygous condition, males are essentially white with very little pigmentation. [9]
File: Flock of Rhode Island Red, Easter Egger, and Barred Plymouth Rock Hens.jpg
After reading poultry literature, she tried domesticating Black Langshans and Plymouth Barred Rocks for a profit. She then mixed the Barred Rocks with Buff Cochins to produce what she called "a big, lazy fowl." [8] Afterwards, she bought eggs from a breeder of B. B. Red Games, later speculating that his chickens were not purebred and mixed with ...
Illustration of thirty-nine varieties of chicken (and one Guinea Fowl) . There are hundreds of chicken breeds in existence. [1] Domesticated for thousands of years, distinguishable breeds of chicken have been present since the combined factors of geographical isolation and selection for desired characteristics created regional types with distinct physical and behavioral traits passed on to ...
In the early twentieth century, the cross of a Barred Plymouth Rock rooster on a New Hampshire hen was a common choice for producing broilers. Occasionally, this mating produces sports with light coloration. George Ellis of Delaware selectively bred these light-colored birds, which led to the creation of the breed in 1940.
The effects of the barred gene are more clearly seen in chicks with pale down. From the late 1920s, auto-sexing breeds were created at the University of Cambridge by cross-breeding Barred Rocks with a wide range of other breeds; the first of these was the Cambar, created by Reginald Punnett in 1928.