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Figure 5


Fig. 5. (A) Wingbeat frequency and amplitude ({phi}), (B) proportion of wingbeat spent in downstroke and (C) average angular velocity of the wing, during downstroke and upstroke during flight in rufous hummingbirds (Selasphorus rufus, N=5) flying at velocities of 0-12 m s-1. Values are means ± s.d.