Fig. 5. Reduced major axis regressions of MG peak force against LG peak forces shows that for all speed and loading conditions, forces in the LG and MG are similar during stance phase (A), but not during swing phase (B). Black triangles, bird 1; red triangles, bird 2; green triangles, bird 3. The slopes of both regression lines through the pooled data of all three birds were significant (P<0.05). Solid lines, slopes for measured data; broken line, hypothetical slope=1.0.