Highlights
Plymouth Rocks were developed from a cross of Dominique males and either Black Java or Black Cochin 
females. The original Plymouth Rock had a barred plumage pattern and was considered the most popular 
breed in the United States in the early 20th Century, used for both meat and brown egg production. Barred 
Plymouth Rock chicks are black with a white spot on top of the head. The wing tips and abdomen are white. 
They have single combs and clean, yellow and black legs and feet. All the adult plumage is barred, black and 
white. Because of the nature of the sex-linked barred gene, the adult females are darker than the males. 
Barred Rock
Black Australorp
Black Australorp is an abbreviation of the name Australian Black Orpington. They were developed in Australia 
from Black Orpingtons with an emphasis on egg production. Black Australorp chicks are primarily black with 
white wing tips, chest and abdomen. They have single combs and clean, white and black legs and feet. Adults 
have solid black plumage with a notable green sheen that is more pronounced in the sunlight. Like most black 
varieties, they may have some white in the wing tips before they reach maturity.
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