We have a cornish cross hen who will be almost 3 weeks old. I found her in the brooder with 70 other cornish, unable to stand, one wing out to the side, eyes closed. I picked her up and she chirped and struggled a bit but quickly gave up. The others were stampeding over her so I brought her inside with some water mixed with nutridrench. She won't drink on her own - or can't - so I've dipped her beak in the water a few times for her to drink. She has not eaten anything so far. I do not see any poop at all or discharge. No wheezing, runny nose, or apparent signs of injuries to her legs or wings - she has been pecked a few times, however. Maybe trampled by the larger roosters who are not going crazy in the brooder going after the other chicks.
She tilts and moves her head when I speak but does not open her eyes. She can move her legs and toes but makes no effort to stand - movement is done by flapping her wings wildly. She is rather big. We've been feeding them only during the day and removing their food at night, but perhaps we should have done so earlier - maybe she's just too big for her body already. :(
Every other chick is active and moving around. Out of the 70 we have we haven't lost any yet, but she may be the first. She has not pooped since I brought her in. I'm worried she may have been injured and was unable to eat, resulting her in tiredness and lethargy or inability to stand.
I have a picture of her to show size.
Every now and then she makes a chirping sound and moves a bit.