This handsome guy was going around the deck rail displaying a behaviour I'd never seen before. Mating or aggression? I don't think anyone else was on the deck and he couldn't see me :)
Feeling good and showing off.... maybe he saw his image in a window, thought it was a rival.
That's exactly what it was! I have mirror film on one of my deck door windows so I don't bother the birds when they're eating and I'm trying to make something to eat :) Thanks, Joanne.