I have 7 hens all around 10 months old and regularly laying. No rooster and I’ve had 5 since last august and the other 2 since January. One of my hens (a Bluebell) has a large abdomen and always has a messy plumage which is very fluffy. I’ve bathed her twice in Epsom salts and a mild pet shampoo to wash poop off. Someone said she may have water belly (ascites). She eats very well and lays generally well. I’ve checked her for mites/fleas around vent area and can’t see anything. She waddles a bit but so does another of my larger hens. Wattle and crop seem fine. I did see her squat outside and seem to be struggling to lay an egg (not in usual nest box) and eventually lay but the egg was rubbery but normal shape and size. They were wormed with flubernet about a month ago. I’ve had a few eggs laid in the bottom of the roost that were soft shells and broken but don’t believe that’s her. The rubbery one was late in the afternoon which was really unusual. I’ve tried to draw off fluid from her abdomen on right side about 2-3 inches below but no fluid came out. She seems fine in every other way. I few of the hens shake their heads a little but it’s not continual. Another hen sometimes seems a little lethargic. They have good quality layers pellets, ACV in their water. I really am stumped and our vets here don’t want to see or help with chickens