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Tri-colored Bumble Bee - Montana Field Guide

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ID a Bumble Bee : USDA ARS

Tri-colored Bumble Bee – Bumble Bees of Wisconsin – UW–Madison

Native Bees and Bumble Bees

Bumble Bees of Wisconsin – Online guide, information, and ongoing

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Wisconsin Bumble Bee Brigade Tracks Species, 1 Photo At A Time

Northern Amber Bumble Bee – Bumble Bees of Wisconsin – UW–Madison

Bees, Birds & Butterflies: The Bumble Bees of Thurston County