Figure 5.

The dependence of the tongue length loaded by capillary suction, h_c, on sucrose concentrations c for a range of biologically relevant loading times τ. We represent three different nectar reservoir depths of H₁ = 1 mm, H₂ = 5 mm and H₃ = 10 mm by dashed lines. Provided that the tongue immersion depth h_i ∼ H, curved and dashed lines allow for a comparison between nectar volumes loaded via capillary suction and fluid trapping.