I have 8 pullets, they are 22-24 weeks old. Our black sexlink (22 weeks) has been squirting watery poop. There really isn't anything of substance to the poop, almost entirely water. I have not noticed anyone else doing this. It was hot for about a week. It cooled off today, but I still noticed her do it once today. She seems to be acting alright as far as I can tell. I plan to add probiotics to their water tomorrow. I did introduce 2 new chicks/pullets that are about 8 weeks old about a week ago, but she had the watery poop before that. I have never seen her give the newcomers a hard time like the other pullets. I'm not sure if this is related, or if she just isn't bothered by their presence. She is my smartest girl of them all. I want to make sure I am doing everything right, if there is a problem.