Non-Migrant: No. All populations of this species make significant seasonal migrations.
Locally Migrant: No. No populations of this species make local extended movements (generally less than 200 km) at particular times of the year (e.g., to breeding or wintering grounds, to hibernation sites).
Locally Migrant: Yes. At least some populations of this species make annual migrations of over 200 km.
Arrives in nesting areas late October-early November, males preceding females. Immatures may not migrate back to their hatching area for several years (typically about 4 years on Midway) (Fisher 1975).