Sour crop?

Hi all,

I came back from holiday today and found one of my battery hens is very ill. I felt her crop and it is huge and squishy like? (She has lost a lot of weight and just stands hunched up falling asleep and then suddenly throwing her crop around) My neighbours said she hasn't been eating or drinking so I tried to get her to eat but wouldn't, so I tried to get her to drink and she drank quite a bit and then this brown liquid came out of her mouth!? I rang the vet but they said they couldn't have her in for another week or so as they're fully booked! Does anyone know what i can do to help her? I can't kill chickens myself but I don't want her to suffer! 

Thanks for the help!

Hi you could try a bit epsom saults mixed with water and seringe it down her neck its an old remady seems to work  if you add a little of ACV to there water it helps prevent it 

its never to late just give it your best shot thats all you can do 

Thanks everyone!

I managed to squeeze most of the liquid out of her crop this morning however there is still a bit left that I can't seem to get out of her