Linear regressions and Pearson’s product-moment correlations to assess the relationship between the cumulative proportion of cards with rat (Rattus spp.) chews after one, two, three, four, and five nights (x-axis) and capture-mark-recapture density estimates plus/minus standard error (D̂ ± SE; y-axis) in forest habitats on Guam and Rota in the Mariana Islands during June 2018–August 2019.