- Cochin bantams are friendly, docile chickens and tend to be submissive when kept with more aggressive breeds. The Cochins were introduced to the United States around 1850 from China. They require good-quality feed and mature in two years. They make remarkably good pets, and a pet Cochin can live between 8-10 years. They make excellent brooders because of their calm, maternal nature. APPROX 104 SMALL BROWN EGGS/YEAR MALES 3 LBS. FEMALE 2 LBS.