This morning when I let my hens out they all went about their normal morning routines, they all headed for their feed (fermented). I assume they all ate but may not have, any way I came back out around 2 this afternoon and I had a hen laying down by the waterer. This is not normal ever, they are excited and are strutting up and down by the front fence looking for either sprouts or fruit that I take to them every afternoon, well Henrietta did not get up so I picked her up and when I did she proceeded to spit fluid out of her beak. She does not smell sour but her crop is very squishy just like a big water ballon. What should I do? This first year of chicken keeping is becoming a very educational year. I have read so many different things from make her vomit to don't make her vomit. Please any help is soooo much appreciated!