Zeb losing feathers?

[ragamuffin]

Hi all

Hoping someone can help me out, still fairly new to keeping birds and haven't had any health issues so far. We have a small setup at the moment, one cage with a pair of zebs, the other (larger) with a pair of gouldians and a lone female zeb. I've noticed my lone female is losing feathers, mostly around her tail (I think I see one tail feather sticking out. Is there anything common that could be effecting her and not the other birds, or would it be more likely that she's being picked on or doing it herself? We are looking at getting her some company in the next couple of weeks.

Thanks for any advice!

Amanda

[AMCA26]

If it is in with the other pair of Zebs I would say its them having a go at her.