Wheezing hen, yellow poop

[Kikiwild]

My girl has been lethargic, has her beak open with a little spit string. She sounds like she's wheezing a bit. Runny yellow poop and won't eat or drink. Any advice for the night??

 

[Kikiwild]

I checked her for egg binding and don't feel anything although I don't think she's laid in a couple days. The last two days have been the hottest days she has experienced in her 6 months of life. I'm hoping she's just heat stressed.