What is the term for an uncastrated male chicken that is at least 8 months old?

The term for an uncastrated male chicken that is at least 8 months old is "rooster." Roosters are known for their distinctive crowing and often serve important roles in the flock, including protection and mating. They are typically recognized by their bright plumage and larger size compared to hens.

In contrast, a capon refers to a castrated male chicken, while a pullet is a young female chicken that has not yet begun to lay eggs, usually under 6 months old. A hen is a mature female chicken that is capable of laying eggs, generally over 6 months old. Therefore, the correct term for an uncastrated male chicken of at least 8 months old is indeed rooster, highlighting its maturity and role within a poultry environment.