Fig. A.1. Expected (red) and observed (blue) frequencies of the number of individuals that were detected at different number of visits. Graphs in the first row were obtained from data gathered from all individuals and graphs from the second row were obtained from data of individuals that were seen at least twice during the year. In all graphs, blue bars (observed data) and red bars (expected data) rarely overlap. We observed many more individuals than expected only once or twice if all were long-term residents when detectability rate was assumed to be 0.33.

Table A.1. Statistical summary of the expected and observed number of visits at which individuals were detected during all three years and using two data sets: (1) “all data”, information from all detected individuals, and (2) “> 1 sightings”, information from individuals detected at least twice during the year. All the expected mean visits were statistically different from the observed mean visits.