Northern Prairie Wildlife Research Center
Body: A color-phase of the snow goose, sizes similar. Slate gray. Head of adult white; immature, gray with small white patch on chin. Feet, bill and "grin-patch" same as Snows. Wings: Slate gray with darker primaries in both adult and immature. Voice: Same as Snows. In Flight: Adult, white head and white or light belly; immature, slate gray with darker wing tips.