Unregistered

This year I had a pair of Cardinals beat on one of my windows. It's a large window framed by plants and has a park bench in front of it. She would land on the edge of the bench and then hit the window, then repeat the process. I'd go to the window and unless I was really close (three feet or less), she would just beat on the window. I'd lower the shade all the way down to the frame and that was the only thing to stop her. He just sat on the bench and watched her. This went on for two weeks (on and off). She would land on the edge of the windowsill and just hit the window. I assumed she wanted to build a nest indoors. I don't have any feeders and tons of doves in the trees (which seem to be very aggressive). I'm wondering why she picked that window as I have a larger bay window just ten feet away with an open flight path. Do cardinals like to build in barns. I wouldn't think it would suit them?

David