a crazy/dumb robin has been attacking various windows on our house for the last three days. he is particularly angry with the window at one end of our living room, but my office windows have crossed a line with him, too. i can hear him taking on the upstairs window right now. he perches on the balcony railing, glares up at the window, flies at the window, thumps, lands on the balcony railing, and starts all over again. the angle of the glaring makes me doubt that he's attacking his reflection, but he definitely looks pissed.