I have a barred rock hen who was looking sickly. She would exit the coop then squat on the ground and sleep, she didn't care if others pecked at her nor did she get up when I came to get her. Her face and comb go from red to pale over and over. When she is pale she acts sleepy. Her poo is green and yellow as is small. This morning she threw up, it was clear. I tried to check her crop but I cannot feel it at all and her chest bone is very prominent. She has not layed an egg since yesterday and I have no idea when the last time she layed.