Wow, he is persistent for sure. I have a Sparrow Hawk that is always after the young birds in my yard. I have 20 birdhouses and a nice large bird feeder which it is always surveying for a delicate meal. All we can do is try to keep the young ones protected. This summer we have seen many sittings of bald eagles too and have had to guard our puppy since we see them high in the trees watching the area.