Do Cochin chicks feather out slower than other chicks????? I have one Cochin chick that is almost 4 weeks old and so far has only leg and some wing feathers, I also have 2 Barred Rocks and 2 Amercauanas that are all 5 weeks old and they all are almost completely featherd out. The Cochin is also half the size of the others. Just curious.