These bees make their nests in holes in the ground. Although solitary nesters, they gather in large aggregations. There are several locations around the FWG where these bees are found. This one was on the rim of a bucket filled with uprooted plants in the BYG. Bug Guide notes that because Andrenid bees will fly at much cooler temperatures than honey bees (Apis mellifera), they can be superior pollinators when the weather is too cold for other bees.