- These bantam Cochins 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 2 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 EGGS/YEAR | EGG COLOR: BROWN | MATURE WT: MALE 3 LBS. FEMALE 2 LBS.