Muscle structure and body size predict the athletic performance of Olympic athletes, such as sprinters. The same, it appears, is true of wild seabirds that can commute hundreds of kilometers a day to find food, according to a recent paper by scientists from McGill and Colgate universities published in the Journal of Experimental Biology.
source https://phys.org/news/2021-01-well-built-muscles-underlie-athletic-birds.html
