Drumstick, one of our mature Red Star hens, had a prolapsed vent this morning. DD found her trying to keep her butt from being pecked at, and brought her indoors and held her until we could get a look and figure out what was wrong/what to do. The boys got her washed up, pushed the prolapsed portion back into place and applied Prep H. We fixed up the large dog crate we use as 'chicken jail' and covered it with a space blanket tarp (to reflect heat away/keep dark, also we left the ends open and made a sort of awning with a board). Put her in there with water and food this morning. There has been no further prolapse, and her vent area looks ok, maybe a bit swollen but not red or anything. How long should we leave her in the crate? And is there any way to prevent, or at least lessen the likelihood of, another prolapse? Thanks in advance.