A male Robin has been attacking our dinning room window for about 4 1/2 hours straight. He flies up and hits the window every 5 to 10 seconds, apparently trying to drive off his reflection he perceives as another male Robin in his territory. He has been doing this for about 4 days now, waking me up bright and early with the incessant, loud banging.
If he has a nest nearby he hopefully will cease his thoroughly annoying behavior and assist in feeding his brood, else they will starve.