My hen Oreo is losing all her feathers...... We were away on vacation for two weeks, and trhis mornign was the first time I got to play with the chickies.... She looks like she has gone thru a war!! Her bottom is almost completely gone Her sides, and under her wings are gone I checked her out and don't see any buggies... what is causing this? Her feathers literally came off in my hand as was looking at her. She will be two in February Is this just molting or do I need to be concerned.......???