Son noticed her "throwing up" (I didn't witness). By the time i got home she was extremely lathargic , couldn't hold up head. tried giving her electrolytes/water with a dropper and i washed her in warm water, put her under a heat lamp. Her vent was clear - nothing unusual. I don't think she is pulling out of this - she is very close to death right now.
Since i'm new to chickens and have 5 others that were in the coop with her, i wondered if anyone could point me in right direction of what might be the root cause. She is about 5 months old and always a little slower than the rest of the chickens but i suspected it was the breed, not anything wrong with her.
I did notice a few mites on her when i bathed her. I have been using DE but i guess not frequently enough. Again, any advice on how to reduce mites appreciated.
Thank you!

Since i'm new to chickens and have 5 others that were in the coop with her, i wondered if anyone could point me in right direction of what might be the root cause. She is about 5 months old and always a little slower than the rest of the chickens but i suspected it was the breed, not anything wrong with her.
I did notice a few mites on her when i bathed her. I have been using DE but i guess not frequently enough. Again, any advice on how to reduce mites appreciated.
Thank you!