Bees in Loretta's Bonnet

When Loretta dropped her armload of firewood on the hearth, a mysterious tube fell from between the logs. It was a leafcutter bee nest. Loretta took it back out to the woodpile and watched as holes appeared. But where were the bees? 
She found more holes appearing in leaves on her rose bushes. And even some of the rose petals. But where were the bees? 
Leafcutter bees are more efficient than honey bees for pollinating gardens. The book includes instructions for building a nest that may lure wild bees to your yard.