i have a beauitful hen that seem healthy except that she has a smell near her vent area when i looked closer i notice that the corners had a little tearing and that the corners had a yellow crusty stuff on them. i moved her into a pen by herself and for 5 days i kept her rear clean and treated the area with antoboit ontment it seem to get better and i place her back in the flock now we are back to the same thing as 2 weks ago.yet not as bad could it be from the large egg she might be laying or do i have another problem? she eats and drinks well feathers and eye condition are excellent as far as i can tell. should i treat her with and oral antiboitc and yes she has been wormed about 4 weeks ago i use and oral wormer that when i notice we had a problem when i pick her up she had a smell not and chicken smell the stinkey bottom smell thank heaven it is not fly season i might have had fly strike on her i do not want to have that happening in the spring . any sugguestion please!! she is the splash one her sister is next to her . she is a beauitful bird and i do not wish to cull her . we hatched her as egg and we got her from a farm that was NPIP/AI free she a sweetie.