Red Rock chicken

Red Rock chicken,

the only chicken still popular to any large extent in the United States today for both meat and eggs. It resulted from a cross between a Rhode Island RedRhode Island Red chicken,
American breed of poultry, no longer raised commercially, but still maintained for use in breeding programs. See Red Rock chicken.
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 male and a Plymouth RockPlymouth Rock chicken,
one of the most popular early breeds of poultry. The Barred Plymouth Rock was a favorite farm chicken since it was both a good egg producer and also developed a large quantity of meat. As the demand for white eggs increased, the breed lost popularity.
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 female. The breed recently acquired new value when it was discovered that the sex of the day-old chicks could be determined by the differences in the color of their down. The variety is raised primarily in New England.
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