Data from: Differences in speed and duration of bird migration between spring and autumn

Nilsson, C. (Creator), Klaassen, R. (Creator), Alerstam, T. (Creator), University of Groningen, 12-Feb-2013



It has been suggested that birds migrate faster in spring than in autumn because of competition for arrival order at breeding grounds and environmental factors such as increased daylight. Investigating spring and autumn migration performances is important for understanding ecological and evolutionary constraints in the timing and speed of migration. We compiled measurements from tracking studies and found a consistent predominance of cases showing higher speeds and shorter durations during spring compared to autumn, in terms of flight speeds (airspeed, ground speed, daily travel speed), stopover duration, and total speed and duration of migration. Seasonal differences in flight speeds were generally smaller than those in stopover durations and total speed/duration of migration, indicating that rates of foraging and fuel deposition were more important than flight speed in accounting for differences in overall migration performance. Still, the seasonal differences in flight speeds provide important support for time selection in spring migration.

The data set ( reflects seasonal comparisons of migration speed and duration among five major categories of birds, namely, (1) songbirds, swifts, and hoopoes ( and 14 cases referring to migration speed and duration, respectively), (2) shorebirds, gulls, and terns ( and 7), (3) ducks, geese, and swans ( and 3), (4) oceanic birds (petrels, albatrosses, shearwaters; and 7), and (5) thermal soaring migrants (raptors, storks; and 20) and other migrants ( and 1).
Date made available12-Feb-2013
PublisherUniversity of Groningen
Access to the dataset Open

    Keywords on Datasets

  • Locomotion, flying, Migration, Bird, bird migration speed, duration of migration, flight speed, stopover, optimal migration, timing of migration
Related Publications
  1. Differences in speed and duration of bird migration between spring and autumn

    Nilsson, C., Klaassen, R. H. G. & Alerstam, T., Jun-2013, In : American Naturalist. 181, 6, p. 837-845 9 p.

    Research output: Contribution to journalArticleAcademicpeer-review

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