Severely Underweight 8yo BR Hen

[PDXChickenLove]

Hi all - I'd love to hear your thoughts. I can't figure out what is going on with one of my beloved barred rock hens. She is skin and bones, still has an appetite, but can't seem to get over her digestive issues and gain weight.

History: It's now been more than 2 months since her first symptom, diarrhea, started. I started giving her yogurt and more protein in the form of mealworms. It didn't resolve. It then led to a nasty flystrike just below her vent, which I successfully treated with SWAT, hydrogen peroxide, and a ton of extra love. I caught the subsequent flystrike much sooner and it resolved in a day, fully healed in 3. I'm voting for no more flystrike ever.

Because her diarrhea was continuing, even with no visible signs, I treated the whole flock for the first time for worms (safeguard).

She can't seem to shake the diarrhea and has understandably gotten more and more lethargic and her comb has gotten dusky. But she still clearly wants to eat, play, and interact.

Any thoughts on what this could be? I had a Java with very similar symptoms for about 2 weeks that died in the middle of this saga.

These are extremely pampered hens, normally super lively, happy, and super personable following me around like puppies.

 

[Kiki]

I am sorry to hear she isn't feeling well.
When you treated for worms how much did you use and for how long?

What do you feed your flock?

 

[PDXChickenLove]

Thanks for your reply!

For worms I treated with safeguard according to recommendations on these forums (I wrote it down, but don't have it on me - maybe 1.5ml?) I did one treatment on bread and then another 10 days later.

I feed them an organic layer feed made locally outside Portland and give them treats of mixed grain scratch and dried meal worms. They also free range, so they get grass, bugs, yogurt, oatmeal on cold mornings, windfall apples, and any blueberries/raspberries/grapes they can find Friday the bushes/trees. I cut off the fruit supply when she first started having diarrhea to see if that was it.

None of this has changed this summer in comparison to previous years.

Could this be some sort of poisoning? We do have some nightshade weeds that have berries if I miss pulling them in time. Typically, the chickens have left those well alone though.