My Java Sparrow has been losing some feathers by her beak, eyes and under the chin for the past few weeks. I thought she was molting at first, but they haven't been growing back. She looks more or less healthy to me; she is very active and eats plenty. Oh, and she squabbles frequently and fights a little with her brother and sister, but they haven't lost any feathers.
I'm stumped. Has anybody had their bird experience this before? Is it serious? How would I treat it or encourage her feathers to grow back?
Here is a photo of the feather loss.
