Black feathers on WBC’s head?

[mjforever3]

My white bellied caique (11 years) is starting to grow in some black feathers on his head. Does anyone know what causes this and if it is normal? He is very hormonal right now and currently receiving Lupron shots for that, so I’m wondering if it could be a hormone thing for caiques.

 

[Monica]

It could be a side effect of the meds or something else going on. It doesn't hurt to rule out medical causes by getting bloodwork done. (If you haven't gotten those recently)