Spring predictability and leap-frog migration

@inproceedings{Alerstam1980SpringPA,
  title={Spring predictability and leap-frog migration},
  author={Thomas Alerstam},
  year={1980}
}
In migratory bird species with a breeding range extending from warm temperate to arctic regions, populations from the latter often winter south of the temperate populations (so-called leap-frog migration). We suggest that this is explained by a great adaptive value for birds breeding in temperate areas with a relatively long and irregular spring to remain during winter within the same climatic regime close to their breeding sites in order to respond directly to the development in spring of… CONTINUE READING

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