Figure S1 from Cotinga communication constrained: body size and lekking behaviour influence cotinga song (Aves: Cotingidae)

Fig. S1 Correlations between environmental variables (Avg_Temp = average temperature in °C; Ann_Prec = average annual precipitation in mm; Avg_Elev = average elevation in m). Black dots denote single species and the grey area around the blue regression line represent 95% confidence intervals.补充图S1 环境变量间的相关性（Avg_Temp=平均气温，单位为摄氏度；Ann_Prec=年平均降水量，单位为毫米；Avg_Elev=平均海拔，单位为米）。图中黑色圆点代表单个物种，蓝色回归线周围的灰色区域表示95%置信区间。