My neighbors have just had a very, very bad infestation of mites for which we used ivermectin drops and diatomaceous earth, but one hen has a pale comb and a very hard, swollen belly. The mites (northern fowl mites I think) were all over her, the worst I've ever seen, but the drops and the dusting seem to have gotten them all for now. She is eating some and drinking, her poop is small and watery, with some light brown solids and she just stands with her head up and bottom down as though her belly is too heavy to lift up. Sadly, she is also very thin around her keel bone - I really wish my neighbors had asked for help sooner! I am wondering if it could have anything to do with having been so infested with mites - her abdomen is not soft and squishy (like ascites might be?) but feels very swollen and I don't feel an egg. I think I'll check up her vent with a glove and some vaseline but should I maybe try draining her of fluid? If so, how does that work and will it be harmful if there is no fluid in there? This is my first time posting here, although I've had poultry for a while and have read many a helpful post on byc!