Hi There, Yesterday my barred rock of about 6 months old started a high pitched barking noise while she was eating. I assumed that she was just eating too fast because she was really shoveling it in, but today she is rather listless. Her breathing is rapid, she walks a few steps and then lays down, her beak is wide open like she is too hot or struggling for air. There is no sign of discharge from the eyes or noise. Does anyone know what this is? I have separated her from our little flock and given her plenty of food and water. Any ideas? Thanks A Bunch! You all always seem to have some good advice. She has been vaccinated for Marek's if that helps.