Hello- We have 4 Welsh Harlequins we raised from chicks this spring. It seemed all along that two were males. However, one has not had its head change color, and has a black bill. Is it also a male? Is it somehow remaining "beta" since the other drake is more advanced? Is it normal to be so slow in changing color? It has the blue wing feathers. We really don't mind either way, but I would like to know. Thanks for any insight!