I hear you knockin, but you can't come in!
When one reaches the age that I have attained after no small success in avoiding various dietary-induced illnesses and diseases of the 20th Century, I do not have any patience for little scares when I brush my teeth in the quiet of my bathroom in the early morning. Little scares such as a cardinal abruptly flying at the window behind me and then tapping incessantly in the early dawn causing my heart to stop and me to drop my toothbrush into the sink.
I also am allowed that occasional nap in the afternoon and do not appreciate the incessant tapping of the same motley cardinal at my bedroom window just as I drift off to sleep---fifteen times!! I have taped the following images of startled owls to the windows of my house and we will see if this discourages this determined and tedious bird from his addled behavior.