So last night I heard a hen outside in the coop making a lot of noise, so I thought there might be a predator of some sort, so I rushed around there to check on the hens and I found one in particular that has been acting a bit strange over the last few days. There was no predator but the hen was vomiting, and had trouble breathing. So i rushed her out of the coop into an open area under my balcony and did some quick research which pointed to sour crop. I massaged her crop from top to bottom and bottom to top and suprisingly enough A LOT of brown stinky crap came flying out. I knew for sure this was sour crop. So once I emptied her crop I put her back in a nesting box, she was still having trouble breathing, so I thought I would leave it until morning. Because my house is right next to the coop I could hear her scrawk every 10 minutes or so and you could hear her jump up and knock her head on the roof. She did come out this morning and drank water, but didn't eat much. She looks like she got no sleep and hasn't ate anything, yet her crop is still kinda full (Probably still infected), she did do droppings that were darkish green. In the morning my Mum went out and bought some live yogurt that I could squirt into her mouth with a syringe, it went down ok. I'm posting this to see if there is anything else wrong, she seems like she has no energy and would fall over, but she went down the ramp ok. She no longer has the breathing problems... Please help. Edit: I saw a lump on her throat, it honestly looks either swollen or broken, not sure what it could be. Probably from bumping her head around for an entire night.