Repeated molting

[DStewart PDX]

My Moyers brown hen is now on her third molt this year. She molted last winter, molted again mid-spring, and is now molting again. No eggs since she laid just a few in the spring. Any thoughts? Thanks in advance.

 

[Happy Chooks]

How old is she? Was there any stress in the spring that would cause a molt - like a predator attack?

 

[DStewart PDX]

She's about a year and a half. No major stressors. She is the lowest ranking hen of four. No one else showed any signs of stress.