I'm thinking I might have a hen with this problem - she waddles when she walks, she's careful coming down the roost and stairs of coop, - I haven't seen her laying, but when I checked her yesterday, her belly seems swollen and even bruised. She may have been injured but I was away on vacation, so I'm just guessing here ... What can I do to help her? She otherwise seems to get around ok with the flock, acting normally and eating, drinking ok.