My Stepdaughter has a young Silkie hen (just started laying) who just started moving her head and neck from side to side and tucks it between her legs and walks backwards. She walks normally at times and is eating and drinking (enough? I don't know). When I was there today I trimmed her feathers around her eyes thinking that it might help, but by the time I left, I didn't see much, if any improvement. She is in a mixed flock with standards and other bantams, and there is a Dark Cornish who picks on the Silkies. Any ideas on what could be wrong? I could find no visible sign of injury.