@azygous I am confused. Maybe you can explain? I have had lethargic chickens die from an infestation of mites/lice. Not sure which as my eyes are bad as well.DE won't cure lice. You need permethrin or some other poultry dust. No. Lice will not make a chicken sick.
You didn't answer my question about the compost and rotting vegetable matter.
You may never see darkling beetles. You need to tip over rocks and other items they hide under. They are about half inch long and black.
What does her crop feel like this morning? Is it empty? Is it full? If so, is it soft and squishy or is there a hard lump?
Why is this one sick and not caused my the lice please ?