Figure 3. Discrete song rate (songs/h) of male Bermuda Vireos during the breeding season (April – August; green arrow) and non-breeding season (December –January; purple arrow). Estimated marginal means and 95% confidence intervals derived from a generalized linear mixed model (discrete song rate was included as the dependent variable, with month as a fixed factor, and subject identity (1–12) as a random effect) with a negative binomial distribution were back-transformed to the original scale and plotted for each month for descriptive purposes and to facilitate planning of future research. Different coloured dots correspond to different colour-banded male Bermuda Vireos recorded during the study.