We have only had chickens for a couple of months now but are having some tough luck. We had to kill one last week because she had a prolapsed vent that was not healing and she was miserable. The vet said the kindest thing to do would be to put her down. She was too young to lay eggs so we don't know what caused it - digestion maybe? So I checked the vents of all our other girls to make sure they were ok. I found a little patch of tiny tan bugs crawling above the vent of our Buff Orpington but her vent otherwise looked pretty healthy. The Delaware's vent looked a little swollen in comparison and smelled a bit. Could it be starting to prolapse? She is very close to laying - comb full and red and I even saw what I think was an egg squat the other day. Could not find anything in our book about tan bugs. Any ideas? We really do not want to loose any more chickens. We have not gotten any eggs yet and besides we are quite fond of them already.