one of my buffs has been getting a "poopy" backside. tonight when i got home it looked really nasty, so i got out some gloves and warm soapy water and got it clean nothing under the feathers looked wrong she just had lots of poop there. all the buffs seem to have a bit of that, but this one was worse than the rest, they also seem to puffy feathers in that area and the poo just sticks to them instead of just falling on the ground? is this a fairly normal occurance w/ orps? or a sign of something else? they all seem to have normal looking poo. thanks for any help.