When we think of avian migration, we generally think of birds in flight. But Common Murres migrate north by swimming. Some Pacific Coast murres paddle north to the sheltered bays of the Strait of Juan de Fuca to feed on herring and other small fish. During their ocean migration, the adult male murres molt their flight feathers and — like the chicks they shepherd — cannot fly. Heading north, they live on the sea. Imagine! A journey that spans two months and may cover hundreds of miles. Learn more at BirdNote.org.