Eurasian-African Bird Migration Atlas - Executive Summary
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Beschreibung
Migration is an adaptive response to the variations in time and space of the ecological conditions that migratory species are dependent on. Each migrant will track such conditions regardless of the distance to be covered in order to reach suitable sites and habitats. Migration is a vital component of a migrant’s annual cycle and successful completion of long-distance movements is often a pre-condition for individual survival. Migration can only be accomplished when animals are able to access the different sites and habitats they are adapted to rely upon along their pathways, from the breeding quarters, through the passage and staging areas, to the non-breeding sites. Through their fascinating journeys, migratory animals connect continents, countries, sites and habitats. They ignore political boundaries and only follow the routes that meet their ecological requirements, leading them through sites and habitats that are often distributed across many different countries.
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