So we got baby ISA Brown chicks from tsc a few weeks ago, and they're supposed to all be females. But, now that they're about 3 weeks old, they're starting to get some permanent feathers. I've noticed that 5 of the 6 are getting normal dark brown feathers, but I know they're sex-linked, so I'm kind of suspicious of one of them in particular that's growing white feathers, and I think it might be a rooster, but I'm not positive. My family is beginner at raising chickens, so we're not sure if this is a rooster. Does anybody know? Here's what most of them look like, starting to get dark brown feathers so I'm fairly confident that 5 of them are hens. This is the one I'm suspicious of. I've heard that these isa browns are sex-linked. Is this a rooster??? Thank you.