Amherst, Hampshire County, Massachusetts, USA April 21, 2004
There are a couple of these nesting at the top of our house. Boy, are they BIG. I caught this one cleaning it's front legs and antenna on our Forsythia bush.
I checked this image with Peterson's Guide (p. 360) and the wing veination and non-hairy abdomen tell me this isn't a Bumblebee.