They're baaack!

Our crazy red birds are back. Although they are beautiful (especially the males ones which are the red ones) they are annoying. They see their reflections in windows and throw themselves up against it (to attack?). Yesterday morning Zachary woke up crying and saying that someone was hammering on his window.
The male red bird.

This is the female red bird thrashing up against our dining room window.

We're not sure what to do about them....or if there is even anything we can do.