Fig. 2
Number of unique roosts used by a bird during a month for 9 black vultures (a) and 9 turkey vultures (b) and maximum number of nights spent at a single roost for black vultures (c) and turkey vultures (d) monitored with GPS transmitters from September 2013 to August 2015. Fitted Poisson GAMM with 95% confidence intervals plotted in red lines
