Figure 1. Predicted hibernation duration, fat and body mass forMyotis lucifugus. Top left: Predicted hibernation duration (days) across temperate North America for Myotis lucifugus . Top right: Linear relationship between body fat and body mass. Each point represents an individual bat and colours indicate the state of each record (Montana = red, New York = green, Vermont = blue). Bottom left: Predicted pre-hibernation body mass of M. lucifugus (g) across the species’ distribution. Bottom right: Predicted pre-hibernation fat resources (g) from the linear relationship between fat mass and body mass. Numbers define changes in contours.