Circular histograms of the abundance variations of Pygoderma bilabiatum, other frugivorous bats, and all other bats captured at the Intermontes Farm, Ribeirão Grande, São Paulo, Brazil, throughout the year. The histograms were calculated by pooling samples from different years during the entire study (17 months between May/2011 and April/2013). Columns represent the numbers of captures per month, the radial lines represent the orientation of the median angle, and the perpendicular bars represent circular variance.