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Fig. 1. The relationship between volumetric food intake in male and female
Palestine sunbirds (males represented by filled circles and solid regression
line; females represented by open circles and broken regression line) and (A)
sucrose concentration (sucrose equivalents) of their diet (males,
y=4.85x0.59, r2=0.83;
females, y=4.52x0.59,
r2=0.72) or (B) glucose + fructose concentration (sucrose
equivalents) of their diet (males,
y=25.32x1.07, r2=0.91;
females, y=21.28x1.06,
r2=0.96).