EDIT: She ended up eventually dying a month or so after I originally posted this. I had a necropsy done and they couldn't find anything wrong, so the death is still a mystery...their best guess was that she ate something that disagreed with her in a big way. The rest of the flock has been fine since then. My 4-year-old Red Star hen has been acting strangely and looking rather unhealthy since around the beginning of August, so it's been about 50 days now like this. Here are some of the symptoms: -Her eyes are always half-closed, sometimes moreso so that they're just slits -She used to be the most dominant and active hen and is now the slowest and least active -She no longer sleeps on the roost at night like all of the other chickens and instead just stands on the floor underneath it -She seems to "waddle" more than the other chickens, sort of stepping apart slower and wider than the rest -She seems hunched up and bloated -When I first noticed something was wrong she had diarrhea all over her rear feathers and now the area is pretty bare -As you can see in the video in the next post, there appears to be a bit of dark-greenish poo there as well -Despite all this, she still eats, drinks and poops I originally posted a thread about this a month and a half ago when it first started, which is here: https://www.backyardchickens.com/forum/viewtopic.php?id=383612 It's a rather long detailed description of several pet deaths and illnesses I had been dealing with and this same hen was mentioned there along with several pictures. The other chicken I was concerned about in that thread that also had half-closed eyes has since gone back to normal and there have been no other deaths of any kind since then. I sent in a fecal sample from the Red Star back in August and it came back negative for everything they tested it for, including worms (which is what I thought it was originally). I had two chick deaths from a batch of chicks I got in July and their symptoms resembled Pullorum and I was thinking maybe that was the issue so I had samples from the rest of the chicks in the batch sent in and tested as well which also came back negative. Those chicks are now about 9 weeks old and need to go outside in the coop with the adult hens and while I probably shouldn't worry about infection (since the results for all the chicks and the hen came back negative) I'm still concerned about the off chance that whatever's going on with the hen could transfer to the chicks or the introduction of the chicks could kill off the hen...so, any advice? She's stuck around for 50+ days like this so I'm optimistic but at the same time I'd really like to know what's going on so I can have a better sense of what to expect and what I can do to help. Thanks in advance for any info or advice!