Sandy soils are perhaps the strongest predictor of high bee diversity in an area. This is primarily because it is easier for them to dig their nests in loose, large grain soil. Some species just need a small patch of bare, slightly sandy soil, while others are only found near pure, deep sand. Though VT is not known for its sandy beaches, our history of glaciation and abundant rivers have created widely scattered patches of sand. Chittenden County has the most abundant and largest examples, but rivers and lakes around the state often produce sand deposits and associated bees.