There are some semi-wild chickens living in my front yard. One of then hens has some young chicks, a few weeks old I think. One of the small chick had a very bad cast of pasty butt. Yesterday I soaked his (or her) but with a warm washcloth then gently removed the poop. His vent was a little bloody but I figured he would be alright now. However today I checked up on him and his vent (or anus) is bulging and seems to be scabbed, or plugged up. I've been searching the site and I think it might be a prolapsed vent but I don't know if that can happen to chicks. I don't really own the chickens, I spread a little bird feed in my yard and make sure the chickens who visit have clean water everyday, but I've become really attached to this little chick. He seems a little lethargic, which simply concerns me even more. I don't have much experience with chickens but I really want to help him. Please help! Any advice would be much appreciated!