Hi there! We’re new to chickens and are in an urban homestead. Can’t have cockerels, but of course the kiddos are attached to them all. I have no idea how to sex them and I have one that I’m not 100% on the breed. Help? First pic I’m needing help with the front black one (black sex link? Cockerel or pullet). Second image is the unknown breed and sex. The third image (buff Orpington? Cockerel or pullet). Fourth image (black sex lin? Cockerel or pullet). Last image (buff Orpington? Cockerel or pullet). They’re about 14 weeks old.