Figure 2.

Changes of mass-adjusted RMR and body mass in different latitudes in light-vented bulbul. (A) Pearson correlation analysis between latitude and mass-adjusted RMR (A) as well as body mass (B) during the breeding and wintering seasons. Seasonal differences of mass-adjusted RMR (C) and body mass (D) in the same geographic population using the t test. (* represents P < 0.05, ** represents P < 0.01).