Evolution of the Nests of Bees

the behavior patterns of the animals as expressed over a considerable length of time. Most bees are solitary, each nest being con? structed by a single adult female; but for social bees a nest permits observation of the results of behavior, not of a single in? dividual, but of several to many (a maxi? mum of probably 100,000). Although 20,000 or more species of bees exist in the world, nests of relatively few have been found and described. Even