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Environment Canada (Opens in a new window.)

Comisión Nacional para el Conocimiento y Uso de la Biodiversidad (Only available in Spanish - opens in a new window.)

United States Geological Survey (Opens in a new window.)

Photo: Long-winged Harrier

Photo: Bonaparte's Gull

Photo: Lesser Nighthawk

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Dendroica: An aid to identifying Western Hemisphere birds

Piranga: A bird-bander's aid to identifying, ageing and sexing birds of the Western hemisphere

Photo: Spectacled Parrotlet

Photo: White-necked Jacobin

Photo: Wood Duck

Government of Canada (Opens in a new window.)

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