American Ameraucana Rooster Age: Approximately 10 months and a little more. Ameraucana chickens (Amrox) are a dual-purpose breed (raised for eggs and meat) characterized by their large size and high adaptability. The rooster has a distinctive size and a weight that can exceed 3.5 to 4 kilograms, with black and white striped feathers. Productivity: Ameraucana chickens are excellent egg producers, laying about 200 to 250 brown eggs annually. An ideal and profitable breed for anyone looking for a dual-purpose chicken (meat and eggs).