Migratory Birds' Mitochondria: A Turbocharged Energy Source

Two research teams independently investigated the changes in mitochondria during bird migration. Canadian researchers, through simulated migration experiments with yellow-rumped warblers, found that migrating birds had more mitochondria with a greater energy production capacity. Meanwhile, an American team used a mobile lab, the "MitoMobile," to study different subspecies of white-crowned sparrows in the wild, reaching similar conclusions: migratory sparrows possessed more numerous and efficient mitochondria. These studies highlight the crucial role of mitochondria in long-distance bird migration and demonstrate the dedication of scientists in pursuing scientific discovery.