This is the female of the pair of western bluebirds nesting in one of our bird boxes. She has a habit of flying to our windows and those of our neighbor. Sometimes she bumps into the window with her breast and other times stops just short of hitting the window. I understand it’s a territorial thing, in that she sees her reflection and thinks it’s a rival. She does this many, many times each day. I’m wondering if she will ever realize it’s not another bird.
