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threatened and/or endangered species detail

MacGillivray's Warbler Oporornis tolmiei

 

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credit: Sarah Beckwith

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Migration Info This species is found in a variety of habitats during winter, but is most numerous in mountainous situations that resemble its breeding areas in the Pacific states. The highest winter population densities occur in the Mexican cloud forests. Because of the elusive and shy nature of this species, its migration is poorly known. MacGillivray's Warblers that migrate along the Pacific coast move northward quite rapidly, while populations in the Rockies tend to migrate via lowlands and disperse to higher elevations along the way.

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