I have a mixed flock of barred rocks and golden comets and my only rooster is a golden comet. I took a bunch of random eggs into my ag class to hatch them and I ended up with 2 full golden comets and 5 cross breed golden/ barreds...4 of the cross breeds turned out to be all white with a few black spots but the other cross turned out solid black with a brown sort of laced neck and the shape of her head is different from the rest. They are all about 2 1/2 months old now and up until now have been perfectly fine. I went out to their coop the other day and found " hootie" the black with brown neck cross sitting out in the run huddled up like she was cold. I talked to her and normally that gets her attention but she didn't look up, even when I climbed into the run and picked her up she didn't even flinch. I could open her eyes but she would close them again and she will open them for a split second but then close them again. I put her inside the coop and she has continued to do that since yesterday even though she is inside...any suggestions as to what it could be?