Behavioral Ecology and Sociobiology

, Volume 68, Issue 11, pp 1799–1807 | Cite as

Seasonal modulation of flight speed among nocturnal passerine migrants: differences between short- and long-distance migrants

Original Paper

Abstract

Migrating birds are expected to fly at higher airspeeds when minimizing time rather than energy costs of their migratory journeys. Spring migration has often been suggested to be more time selected than autumn migration, because of the advantage of early arrival at breeding sites. We have earlier demonstrated that nocturnal passerine migrants fly at higher airspeeds during spring compared to autumn, supporting time-selected spring migration. In this study, we test the hypothesis that seasonal airspeeds are modulated differently between short- and long-distance migrants, because of a stronger element of time selection for autumn migration over long distances. In support of this hypothesis, we demonstrate that the seasonal difference in airspeed is significantly larger (spring airspeed exceeding autumn airspeed by a factor of 1.16 after correcting for the influence of altitude, wind and climb/descent on airspeed) among short-distance compared to long-distance (factor 1.12) migrants. This result is based on a large sample of tracking radar data from 3 years at Falsterbo, South Sweden. Short-distance migrants also tend to fly with more favourable winds during autumn, indicating relaxed time constraints (being able to afford to wait for favourable winds) compared to long-distance migrants. These results indicate surprisingly fine-tuned seasonal modulation of airspeed and responses to wind, associated with behavioural strategies adapted to different levels of time selection pressures during spring and autumn migration.

Keywords

Airspeed Ground speed Bird migration Flight speed Optimal migration Passerine Short-distance migrants Long-distance migrants Spring migration Autumn migration 

Supplementary material

265_2014_1789_MOESM1_ESM.pdf (894 kb)
ESM 1(PDF 894 kb)

References

  1. Alerstam T (1979) Wind as selective agent in bird migration. Ornis Scand 10:76–93CrossRefGoogle Scholar
  2. Alerstam T (1991) Bird flight and optimal migration. Trends Ecol Evol 6:210–215PubMedCrossRefGoogle Scholar
  3. Alerstam T (2003) Bird migration speed. In: Berthold P, Gwinner E, Sonnenschein E (eds) Avian migration. Springer, Berlin, pp 253–267CrossRefGoogle Scholar
  4. Alerstam T (2006) Strategies for the transition to breeding in time-selected bird migration. Ardea 94:347–357Google Scholar
  5. Alerstam T, Lindström Å (1990) Optimal bird migration: the relative importance of time, energy and safety. In: Gwinner E (ed) Bird migration: physiology and ecophysiology. Springer, Berlin, pp 331–351CrossRefGoogle Scholar
  6. Bäckman J, Alerstam T (2003) Orientation scatter of free-flying nocturnal passerine migrants: components and causes. Anim Behav 65:987–996CrossRefGoogle Scholar
  7. Bruderer B, Peter D, Boldt A, Liechti F (2010) Wing-beat characteristics of birds recorded with tracking radar and cine camera. Ibis 152:272–291CrossRefGoogle Scholar
  8. Conklin JR, Battley PF, Potter MA (2013) Absolute consistency: individual versus population variation in annual-cycle schedules of a long-distance migrant bird. PLoS ONE 8:e54535PubMedCrossRefPubMedCentralGoogle Scholar
  9. Falsterbo Bird Observatory (2013) http://www.falsterbofagelstation.se. Accessed 12 August 2013
  10. Hedenström A, Alerstam (1995) Optimal flight speed of birds. Philos T Roy Soc B 348:471–487CrossRefGoogle Scholar
  11. Hedenström A, Alerstam T (1997) Optimum fuel loads in migratory birds: distinguishing between time and energy minimization. J Theor Biol 189:227–234PubMedCrossRefGoogle Scholar
  12. Henningsson P, Karlsson H, Bäckman J, Alerstam T, Hedenström A (2009) Flight speeds of swifts (Apus apus): seasonal differences smaller than expected. Proc R Soc Lond B 276:2395–2401CrossRefGoogle Scholar
  13. Houston AI (2000) The strength of selection in the context of migration speed. Proc R Soc Lond B 267:2393–2395CrossRefGoogle Scholar
  14. Karlsson L (2009) Vingar över Falsterbo, 2nd ed. 192. Falsterbo fågelstation, FalsterboGoogle Scholar
  15. Karlsson H, Nilsson C, Bäckman J, Alerstam T (2011) Nocturnal passerine migration without tailwind assistance. Ibis 153:485–493CrossRefGoogle Scholar
  16. Karlsson H, Nilsson C, Bäckman J, Alerstam T (2012) Nocturnal passerine migrants fly faster in spring than in autumn: a test of the time minimization hypothesis. Anim Behav 83:87–93CrossRefGoogle Scholar
  17. Kokko H (1999) Competition for early arrival in migratory birds. J Anim Ecol 68:940–950CrossRefGoogle Scholar
  18. La Sorte FA, Fink D, Hochachka W (2013) Population-level scaling of avian migration speed with body size and migration distance for powered fliers. Ecology 94:1839–1847PubMedCrossRefGoogle Scholar
  19. McNamara JM, Welham RK, Houston AI (1998) The timing of migration within the context of an annual routine. Oikos 29:416–423Google Scholar
  20. Newton I (2008) The migration ecology of birds. Academic Press/Elsevier, LondonGoogle Scholar
  21. Nilsson C, Klaassen RHG, Alerstam T (2013) Differences in speed and duration of bird migration between spring and autumn. Am Nat 181:837–845PubMedCrossRefGoogle Scholar
  22. Pennycuick CJ (2008) Modelling the flying bird. Academic, AmsterdamGoogle Scholar
  23. Quinn GP, Keough MJ (2002) Experimental design and data analysis for biologists. Cambridge University Press, New York, pp 364–365CrossRefGoogle Scholar
  24. Roos G (1984) Migration, wintering and longevity of birds ringed at Falsterbo (1947–1980). Anser Suppl 13:1–208Google Scholar
  25. Rudebeck G (1950) Studies in bird migration. Vår Fågelvärd, Berlingska Boktryckeriet, Lund, Sweden, Suppl 1:1–148Google Scholar
  26. Schmaljohann H, Liechti F (2009) Adjustments of wingbeat frequency and air speed to air density in free-flying migratory birds. J Exp Biol 212:3633–3642PubMedCrossRefGoogle Scholar
  27. Schmaljohann H, Fox JW, Bairlein F (2012) Phenotypic response to environmental cues, orientation and migration costs in songbirds flying halfway around the world. Anim Behav 84:623–640CrossRefGoogle Scholar
  28. Seewagen CL, Guglielmo CG, Morbey YE (2013) Stopover refueling rate underlies protandry and seasonal variation in migration timing of songbirds. Behav Ecol 24:634–642CrossRefGoogle Scholar
  29. Swedish metrological and hydrological institute (2013) http://www.smhi.se/klimatdata/meteorologi/dataserier-2.1102. Accessed 4 June 2013
  30. van Noordwijk AJ, McCleery RH, Perrins CM (1995) Selection for the timing of great tit breeding in relation to caterpillar growth and temperature. J Anim Ecol 64:451–458CrossRefGoogle Scholar
  31. Weast RC (ed) (1964) Handbook of chemistry and physics. The Chemical Rubber Co., OhioGoogle Scholar

Copyright information

© Springer-Verlag Berlin Heidelberg 2014

Authors and Affiliations

  • Cecilia Nilsson
    • 1
  • Johan Bäckman
    • 1
  • Thomas Alerstam
    • 1
  1. 1.Department of BiologyLund UniversityLundSweden

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