What is "legbar"

The Legbar is a rare British autosexing chicken breed. It was created in the early twentieth century by Reginald Crundall Punnett and Michael Pease at the Genetical Institute of Cambridge University. It was created by cross-breeding Barred Plymouth Rock chicken, Leghorns, Cambars, and in the case of Cream Legbars, Araucanas. The Araucana blood in the Cream Legbar is reflected in its crest and blue to blue-green eggs.