I've only seen them a couple of times that I can think of. Once on Martha's Vineyard, around the flowers at the edge of the porch where we were staying. Once on Manitoulin Island, where a little cafe had a feeder at the corner of the front window. Delightful wee beasties, for sure, and some sweet posts.   

I held off opening this thread for a few moments, toying with the question of which of at least three meanings it could have. I was almost ready to bet that Liz the Squeak had started it (with the purest of intentions of course).