I was filling feeders yesterday and heard one of my chickens throwing up. Or at least thats what it sounded like. When i went around to check on them there was a couple of fairly large wet spots in the run. I couldn't tell which one it was and none seemed to be different. I'm wondering if it just drank too much water(i had just filled the waterers). There didn't seem to be any solids and the liquid just looked like water. Anyone experienced this? Thanks in advance.