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Figure 6


Fig. 6. Flight kinematics of budgerigars across a range of speeds. (A) Stroke amplitude. (B) Stroke plane angle relative to the horizontal plane. (C) Relative proportion of time spent flapping. (D) Frequency of non-flapping phase. (E) Relative wing span during non-flapping phase. Closed symbols, data from uninstrumented birds; open symbols, data from instrumented birds. Values are means ± s.e.m. (N=7).