Is it trying to tell me something?

For about 10 days now a grey catbird has been flapping, pecking and hitting my window. It's the strangest thing! It starts at about 5:30am and continues off and on throughout the day. He perches himself on the rhododendron below the window and flies to and from the window. In fact, I am listening to the melody of his routine as I write.

It's quite fascinating and I have to admit I am intrigued. I can't understand his persistence. What is it that he is trying to accomplish. I am not sure if he is trying to get in or what. He doesn't seem to be phased by our presence. If we stand on the landing in front of him, he continues. If I sit on the porch beside him he continues. I think he is drawn to us or our home.

I watch him everyday and wonder... Is he trying to tell me something?