Very often when it is time to get up there is this tap, tap on my bedroom window. Most of the time it is around 7 am but it does happen at other times of the day and also on adjacent windows. At first I thought the Robin was catching little flying insects. It happened very often and the attack on the window is head on so now my guess is that the male Robin is attacking his image in the window. Male Superb Fairy Wrens have done the same with our front door window and mirrors on vehicles. The photo shows the Robin having a spell at the side of the window.