Cockatiel screams while bathing

[Eidawan]

When I bath my cockatiel he loves it, but at the same time he starts screaming like when something hurts him. I don't know why does it happen, I'm so confused because when he sees the water running or the spary bottle, he wants so bad to get a bath :/

 

[expressmailtome]

Does he scream at other times? Some birds scream when they are enjoying themselves.

 

[Eidawan]

Yeah, when he is preening (not all the time, jut in some moments), but i guess that's because he gets hurt or a feather annoys him haha