The Xerces Society for Invertebrate Conservation is tracking populations of four imperiled species of bumble bees in North America. Four once-common bumble bees have nearly disappeared from their native ranges. Have you seen the rusty-patched, yellow-banded, western or Franklin's bumble bee? Help us track the status of these essential pollinators. See www.xerces.org/bumblebees for more information or http://www.xerces.org/bumble-bee-identification/ for help with idenfication. less ↑