I'm going with the notion there was a freckle on your ear or something. Mine all peck at the ones on my legs and arms. I too have had a couple GLW's, jump up on me. Usually on my back if I'm squatting down to do something, but I've had a BR jump on my arm and roost, and a RS jump on my lap and roost. I take it as a friendly gesture on their part since they don't seem to be aggressive, just being comfortable with me and wanting to be "close".