The method for determining population size in wildlife biology often involves techniques such as mark-recapture studies, surveying, and modeling. In mark-recapture studies, a sample of individuals is captured, marked, and released, followed by a second capture to estimate the total population size based on the proportion of marked individuals. Other methods may include transect surveys, where researchers count individuals along predetermined paths or use statistical models incorporating location and environmental factors. These assessments are crucial for effective wildlife management, conservation efforts, and understanding population dynamics.