The Brahma is a large breed of chicken developed in the United States from very large birds imported from the Chinese port of Shanghai. The Brahma was the principal meat breed in the US from the 1850s until about 1930. The Brahma is a massive, stately bird, with an upright carriage and a large head. When standing, they should almost appear to form a V, and should stand fairly tall—males more than females. Feet should be strong, with feathers extending all the way down the middle toe, and plumage should be held more tightly than in the Cochin. Weights average about 5.5 kg (12 lb) for cocks and 4.5 kg (9.9 lb) for hens.The Brahma is a good winter layer of large brown eggs;eggs weigh approximately 55–60 g.
Related Article: http://www.pssc.com.ph/largest-chicken-breed/