We have a chicken names Ariel, who often gets bullied. Last week we noticed the other chickens had been pecking her neck. Just feathers missing and no bad injuries so everyday we've been putting the purple lotion anti peck stuff on it. (The lotion on her neck in the pic is the anti peck stuff). Today when we outside, she was out and about with the other chickens, acting fine but then my husband told me she kept laying down. So I went down there and noticed she would lay down on her curled up toes. And then she seemed to pant so I got her some water. It was 70 yesterday but aside from that, it hasn't been hot. we saw her poop and it was runny. We felt all around her and she didn't feel egg bound or anything. I'm concerned for her. We also washed her vent off in warm water and dried her off. Any idea on what's wrong? We did switch their food to layer feed a week to two weeks ago but she seems to be eating just fine! I've attached a picture of her while she was laying down, panting. Thank you!