A few days ago i noticed my BR hen breathing straingely, when she inhaled, she did it slowly and i could hear a soft "whistling" noise, but she couldnt exhale thru her nose, she would open her mouth as wide as it can go and exhale. she wont eat and drinks some water,walks slowly and avoids the other chickens. shes 9 months old and not laying yet. i looked in her throat and saw that her esphogas is not shut but open so wide a penny could fit in it. her "voice box" (i guess thats wht it is) is also enlarged. no swelling as i can see but it looks pale. so wht should i do? it might be blocked ( i doubt though). it will probably effect her egg laying ability so should i make a chicken stew out of her or try to help her get over whtever this is.