There are dozens of bumblebee species in Vermont, but Bombus impatiens is particularly common. That's much more likely than B. pensylvanicus mentioned in the article.
Very helpful. I looked up the 2 species and the American Bumblebee[2] is noted as having an increasingly southern habitat, with borders denoting their former range/habitat.
[1]: https://en.wikipedia.org/wiki/Bombus_impatiens
[2]: https://en.wikipedia.org/wiki/Bombus_pensylvanicus