I have a five and half year old Black Australorp, Constance with a reoccurring issue. I assume it's reproductive system related, but the symptoms went away entirely for several months before showing again, which I haven't seen before during this time of year. It just started again the other day and, like last time, she was her normal bubbly self in the morning, but instead of roosting at night she was sitting in a nest box. I have several other gals who are brooding right now, but Constance isn't displaying any brooding behavior and has never brooded before. She was just siting in the box. There is no sign of straining. She does have diarrhea that just started again last night and goes between being rather thick white to a light tan more liquid consistency. The same as last time, she's mostly uninterested in food and is drinking unusually high amounts of water. She's normally incredibly active, running around nonstop, but her activity level has plummeted over the last 24 hours and she's now just standing watching everyone else run around. Last time, she did the same inactive thing for a day or so, slept in the nest box at nights then started spending her days sitting in the nest box. Again no straining, though I can only imagine she thought she had something to lay since she remained in the nest box. Her voice also changed while she was having the issues last time and is starting to again. It's hard to describe - it doesn't so much sound like her breathing is off like I've heard with birds with ascites, more like her voice is hoarse and she's doing an unusual amount of mumbling. Her feathers are in great condition, comb still red and weight very good. No sign of abdominal swelling at this point and there wasn't last time either. It's been about a year since the flock was last checked for internal parasites, but all was good then and no one else is showing symptoms of any kind. Over the years, I've had birds that have been diagnosed with egg peritonitis, internal laying and cancer, and a couple of them did have symptoms that arose in spring and then mostly went away with the drop in day length until the next spring. In Constance's case, the problem first came up a few months ago and she quickly became so lethargic I was sure she didn't have long left. The symptoms stuck around for a week or two and then vanished completely. She was seemingly 100% back to her normal perky self until last night. Below is a photo of Constance from this morning. You can see that she doesn't look bad for a chicken in general, but usually she has a very sleek appearance and upright posture. The biggest thing is that she would normally never hold still long enough for a picture whereas right now she would prefer not to move. Has anyone else had a bird display similar symptoms that came and went? I'm imagining there isn't much to be done about it, but she's my little sweetie pie so any thoughts would be greatly appreciated!