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Monarch ButterflyAnnual CycleBreeding AreasMigratory RoutesClimate ChangeBird MigrationWing MorphologyMigratory SpeciesStable IsotopesMigratory BirdsCanadian ArcticLong-distance MigrationMigratory AnimalsPacific NorthwestAnimal MigrationStable Hydrogen IsotopeNorthern BreedingPopulation DynamicsWinter MovementsStable Isotope