We have a partridge cochin that I'm convinced is a boy. The name went from Olivia, to Olive, to Oliver. Oliver is 9 weeks old. My mother said she heard a crow like sound. Oliver is the only cockerel out of an EE and cochin pullet. There's also 5 leghorns that almost all are laying. I doubt Oliver attempted to crow since cochins mature slow. When can I expect Oliver to start crowing?