Tootsie was really sensitive about pin feathers that had not dried up. If I happened to hit one when scratching her she would react like she was going to tear my finger off though she never clamped down on the offending finger. When the feathers dry up and are ready to break open, she really appreciates the service of doing it for the ones that she can't reach. But she never became moody. Now she has Rosco to do that service so I figure another bird is better at doing it than I am.
My Senegal Sidney is going through a light molt right now and, if anything, he has gotten more mellow and snugly.