Our conure, Gus, who we have had about four years now, has bald spots from plucking/grooming. The feathers that are missing, I think are the “down” feathers. Spots are on his back, chest and near his rear end. No changes to diet and no other changes in environment. Not sure what’s going on, but wondered if relates to dry air since we don’t have humidifier, or maybe bc changes in what is inside his cage. I changed cage and removed items I had added to see if that helps. Have vet appt 12/16. Any feedback is appreciated!