Some days ago i posted a thread about my birds black feathers, and it could be molting. Now my one parrotlet starts lose feathers but not the other one. They always preen on my shoulder and my bird lost some feather when it preened , i see some feathers on the bottom of the cage, could it be molting? I dont see any bald spots, or if it plucked but she is fine and no behaveior changes.