More than 50 species of migratory landbirds, whose combined populations represent nearly one billion individuals, migrate through the Neotropics to North America every year. Many of these species are in precipitous decline, with those that migrate farthest disappearing the quickest. Of all the periods of the life cycle, migration is the least understood and yet, it is when the majority of mortality occurs. To fill critical gaps in our knowledge of bird’s needs during migration, the Neotropical Flyways Project was born in 2016 with the goal of identifying migration routes and key stopover sites – where the energy for migration is obtained – across seven countries in Central and South America (see maps of likely stopover regions below).

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