Most of you experts seemed to agree that my 5-6 week old yellow chick is a rooster but the black one you disagreed about! Someone said they'd take a look when a few more feathers developed, which they have, hence the updated pics. The black one (same age) seems much more timid than the yellow. Got good pic of yellow with feathers expanded, perhaps this will confirm rooster?? You all know what you're looking at, I don't, but I find your help invaluable, thanks very much. Can anyone tell me why my questions have black dot next to them?