american tree sparrow
small, sparrow-like bird brown or grey head and back white or buffy belly chestnut or rusty streaks on the wings and back white or buffy throat black spot on the chest thin, dark bill white outer tail feathers
american tree sparrow which has small, sparrow-like bird american tree sparrow which has brown or grey head and back american tree sparrow which has white or buffy belly american tree sparrow which has chestnut or rusty streaks on the wings and back american tree sparrow which has white or buffy throat american tree sparrow which has black spot on the chest american tree sparrow which has thin, dark bill american tree sparrow which has white outer tail feathers