Howdy from NW Arkansas. My 11 month old buff orpington has developed a poopy butt that is pretty matted and has other chickens feathers stuck in it. (Yuck) I thought maybe she was just going through a bit of runny poo as the weeds are beginning to green up in their run. The other 5 girls are as clean as a fluffy butt should be. She is laying regularly (her eggs are a different color from the rest). Is this something I should worry about or am I being a panicky chickie mom? Thanks!