Diversidad de especies, fidelidad al sitio de migración, y ecología de aves migratorias terrestres en los manglares de Costa Rica

Resumen

Data from the North American Breeding Bird Survey indicate that populations of many species\nof neo-tropical migrant birds have declined over the past three decades. Processes operating\nduring the non-breeding season may be particularly important in driving declines, yet data\nlinking wintering and breeding populations are currently few. The scarcity of data on the winter\necology of neo-tropical migrants is especially alarming because most natural habitats in Central\nAmerica (where most of these species over-winter) are currently considered �vulnerable, threatened,\nor endangered� due to direct human impacts. Wetland habitats, such as mangrove and\nriparian forests along the Pacific Flyway are particularly important for over-wintering bird species\nthat breed in North America. Development and ranching is severely impacting these habitats;\nthus, information that leads to the conservation of important areas for birds and other wildlife\nis critically needed. Here we report on the results and observations of four winters banding\nin Costa Rican mangroves.