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Figure 3


Fig. 3. Mean stress difference {sigma} of zebra finch and budgerigar pectoralis muscle fascicles in relation to simulated flight speed. Values are means ± s.e.m. (budgerigars: N=11, 9, 9, 6, 9, 5, 7 for speeds 4, 6, 8, 10, 12, 14, 16 m s–1, respectively; zebra finches: N=7, 6, 3, 5, 4, 4, 7 for speeds 0, 4, 6, 8, 10, 12, 14 m s–1, respectively).