I saw this bee yesterday whose legs are heavily weighted down with pollen. Ragweed, Golden Rod, Black/Brown Eyed Susans, Ox-Eyes, and Arrow Head are now in full bloom. I have never come across a bee that is all black like this. It was very tolerant of me only being 5 inches or so from him trying to take pictures. I got it in flight and if you look closely you can see the blur of the wings. Anybody now what kind of bee this is?