Ostriches go through a large change in body mass as they grow from hatchlings to adults. Body mass increases 25-fold as the bird develops from a four-week hatchling to a full grown adult. If they grow isometrically, then by what proportion will their optimal stride frequency during walking change as they grow into adults? By what proportion will their maximum walking speed change?
Answer: The optimal stride frequency changes by a factor of 1.72 from hatchling to adult. The maximum speed of the adult is 71% greater than the maximum speed of the hatchling.
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