Providing healthy habitat alongside pollen and nectar sources for our native bees is one of the best ways to support a healthy pollinator population. Do you ever wonder where cavity nesting species go when they don’t have access to man-made cardboard tubes or bee houses? Solitary cavity nesting bees are clever and resourceful, and they’ll find holes, tunnels, and tubes in our natural and developed environment. For instance, here is a leafcutter bee sunning on a barn wall, just outside the hole where he probably hibernated all winter. Here too, is evidence of a female leafcutter pulling pollen into a new hole for the next generation to feed on.