I have a silkie hen(non - egg laying b.c. she just had a hatch) ... that is showing all signs of normalicy, except that she has a fetid odor -- upon closer inspection...there is a gooey yellow ring around her vent. I wipe it off daily, pour hydrogen peroxide on her vent. This has been going on about 3 days. the smell is outrageously 'dead' like smell. the tissues around the vent look fine. She poops little bit of watery poop, but it is not diarreha like... She acts fine. any ideas of what it may be or how to treat it?