America, Spring, Rocky Mountains, Colorado-Utah-Wyoming-Montana-Idaho-Utah-Colorado-Wyoming-Utah
2017 Spring flora and fauna, Rocky-Mountains, route: Colorado-Utah-Wyoming-Montana-Idaho-Utah-Colorado-Wyoming-Utah, Monique and Marijn
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Tachycineta thalassina
Violet-green Swallow, Mammoth Hot Springs, Yellowstone N.P., Wyoming
AmericaAnimalBirdHirundinidaeRocky MountainsWyomingYellowstone National Park
