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Note: This is usually considered the only living species in the genus Passerella, though some authors divide it into several species.
Passerella iliaca iliaca group
- Northern taiga forests of Canada & Alaska, wintering eastern USA
Passerella iliaca unalaschcensis group
- Pacific coast from Aleutian Islands south to SW Canada, wintering west coast of USA
Passerella iliaca megarhyncha group
- Cascade & Sierra Nevada mts., Oregon & California, USA, wintering SW California, USA