by Pajarita » Thu Jun 27, 2019 8:32 am
Hi and welcome to the forum! A Luzon, how wonderful! We've never had one here before! Now, I can't see her chest very well and what I can see does not show any 'brown, dirty-looking feathers that are not dirty' but what's happening at the top of her head is that feathers are missing and the grey you see is the down showing through -which never does unless there are contours (the little round feathers that cover the body) missing. Is she scratching her head or rubbing it against the bars of her cage (this happens when the bird spends too many hours in it) or is there anything in her cage that would rub against it? Like, for example, a very small opening in the food bowl would end up rubbing the top of her head every time she sticks it in - see what I mean? It could also be a foraging toy. Or does she maybe have a mate that overpreens her? Because the only way a bird loses feathers on top of its head is from rubbing or scratching or another bird plucking them as the bird itself cannot pluck them.
Now, I couldn't see the 'brown and dirty-looking feathers' on the chest (although it does look a bit 'choppy' on the front) so I am guessing here but, normally, what you describe is discoloration from a bad diet. Amazons and ekkies get them all the time when they have liver damage from a diet too high in protein. Is it possible you are free-feeding protein food? Has she had a complete physical in the last six months?