plucking cockatiel

Is Rico plucking? I noticed it the other day.

So, a day or two ago, I noticed this patch of down exposed and knowing Rico has a history of plucking, I don’t think it’s a stretch to assume he is plucking his feathers again. Is it what I think? Should I put a cone on him? His checkup is soon (June 17th)

Hey guys, I have a 2 1/2 year old female cockatiel who started plucking around 5 months ago. She only plucks under her wings, above the tail feathers, and in the lower half of her chest. I’ve done quite a lot of research about this and wanted to see if there is something you guys could...