A Directory of 150 Key Conservation Sites

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Some 1,400 species of birds inhabit North America. This is roughly equivalent to one species in six of all the world's avifauna. By country, one finds over 1,000 species in Mexico, over 800 in the United States and over 600 in Canada. More than 250 species in North America are migratory. The spectacular array of bird life found across the continent is supported and created by the varied tapestry of North America's lands and waters.(...)