I have two love bird one male one female they had a previous home but were taken to a shelter because the previous owners mistreated them now I own them since November and love them to pieces. recently I’ve noticed that the males feathers have gone missing and I am wonder what could cause this is it himself his mate or something else. It is only the males feathers which are affected the female appears to be perfectly fine. I live on an island that does not have a bird vet so any help is very appreciated.