I've noticed over the past couple weeks that it seems like one of my girls has some diarrhea...when i clean the poop board there is normal poop but some pancake poop also. Today I went in to find some pretty watery poop by the door, so I took a sample with me to work (I'm a vet tech) and no coccidia. It's nice fall weather here so heat isn't causing it, and there hasn't been any new stress. They did just start laying a week ago...would that cause it? They're acting fine otherwise...any suggestions?