I have a little Seabright hen that is acting really off. She is molting but in addition to going through a molt, the back half of her comb is dark grey/black color. I have seen her eat some in the morning but her crop is empty tonight and I noticed she just stood around during free range time this evening. I brought her inside and looked inside her mouth and it seems pale to me. She is about 3 pounds and she is 3 1/2 years old. Any ideas?