I have a MM hatchery Golden Lace Wyandotte chick that will be 4 weeks old Thursday. My question is, do they feather out slower than other breeds? This chick, pullet, only has the very tips of wing feathers growing and chick fuzz all over the rest of her body. She is the same size as the other chicks I ordered and very healthy, just no feathers. What can cause this? Should I be alarmed?