I haven't seen them back here, but I haven't been looking, and you HAVE to look- or have the odd 'WTF was that!?' moment. First time I noticed them, I was walking in my back yard. It's a totally unplanned weed 'garden', with ragweed, jewel weed, asters, ornamental oregano, queen anne's lace and joe pye. Hummingbirds LOVE joe pye. Anyway, I got buzzed by a really big bee, then another, then they continued buzzing. I was prepared to swat at one when it did that hovering thing a couple of feet in front of my face, and I thought, 'WHOA! WAAAY better than bees!'

They were less evident in years after that one, until last year when I saw them a lot. After the leaves fell in the autumn, I found the little nest hanging from a branch on the big tree in my front yard. I wanted to save it, but left it too long and the branch came down.