Over the past few years there have been a series of field identification tools published for bumble bees including Bumble Bees of the Western United States, by Koch, Strange and Williams. The Xerces Society established the Bumble Bee Watch citizen science project to collect presence data of bumble bees. As part of Bumble Bee Watch, we have searched for, photographed, submitted and identified hundreds of bumble bees across the state of Washington as well as in Oregon, Idaho, Montana and Colorado.