Hello! I adopted this Isa Brown chicken the Sunday after Easter, so I am not sure of her exact age. I am guessing 12-14 weeks by what I have researched regarding her plumage and behavioral traits. But I am concerned she is a cockerel due to the shape of her tail, and the shininess of her neck feathers. It's difficult to find accurate information online to flesh out the concerns. EDIT: When I received her, she was still very much a chick. Yellow fluffy feathers and all. Any insight would be greatly appreciated. Thank you so much, and I look forward to growing as a chicken mother!