Yoda is picking at one spot on his body

[BirdyBrain]

Hi, all.
Yoda tends to pick at a small area where his left wing meets his body, up by his "neck/shoulder." It appears that the spot is missing some feathers, and he keeps pecking at it when he's active (or hyperactive). The bird-store owner didn't notice anything when I mentioned it to her, but I never see Yoda pecking at the other side -- and I swear I see a spot with fewer feathers.

What might it be and what can I do about it?

Thanks, Flock!

 

[plumsmum2005]

Hope you find this helpful https://www.birdsupplies.com/pages/understanding-feather-plucking-in-parrots

Dont forget to use the search function on here also.