My RIR pullet aint right :(

[CaptainCrunch]

Went to close up the coop for the night and one of my RIR pullets was just sitting on the ground near her feed.
I have 1 Australorp rooster, 3 RIR pullets and 3 Golden Laced Wynadotte pullets.
All the others were active and running around, but this girl let me pick her up and hold her in one hand.
Her eyes half closed and very calm, no visble signs of injury and cant see anything else doferent about her, its like she has been sedated.
I have brought her inside in a carrier, disinfected the waterers and feed container, but now i dont know what to do... any help would be greatly appreciated

 

[micstrachan]

Please check that her crop is emptying and that she has access to grit if she’s eaten anything except a complete crumbled and pelleted feed. Keep her warm and add vitamins and electrolytes to her water. Maybe give her a gentke crop massage, taking care not to cause the contents to come up and accidentally aspirate her lungs. Also, how is her poop? You may want to have a fecal float done. Any vet can do it, even if they don’t treat chickens.