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The migration of th...
The migration of the great snipe Gallinago media : intriguing variations on a grand theme
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- Lindström, Åke (författare)
- Lund University,Lunds universitet,Biodiversitet,Biologiska institutionen,Naturvetenskapliga fakulteten,BECC: Biodiversity and Ecosystem services in a Changing Climate,Centrum för miljö- och klimatvetenskap (CEC),Biodiversity,Department of Biology,Faculty of Science,Centre for Environmental and Climate Science (CEC)
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- Alerstam, Thomas (författare)
- Lund University,Lunds universitet,Evolutionär ekologi,Biologiska institutionen,Naturvetenskapliga fakulteten,Evolutionary ecology,Department of Biology,Faculty of Science
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- Bahlenberg, Peter (författare)
- Lake Annsjon Bird Observ, Handol 563, SE-83015 Duved, Sweden.,Lake Ånnsjön Bird Observatory
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- Ekblom, Robert (författare)
- Uppsala University,Uppsala universitet,Evolutionsbiologi
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- Fox, James W. (författare)
- British Antarctic Survey, Nat Environm Res Council, High Cross, Madingley Rd, Cambridge CB3 0ET, England.,Natural Environment Research Council
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- Råghall, Johan (författare)
- Lake Annsjon Bird Observ, Handol 563, SE-83015 Duved, Sweden.,Lake Ånnsjön Bird Observatory
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- Klaassen, Raymond H.G. (författare)
- Univ Groningen, Conservat Ecol Grp, NL-9700 AB Groningen, Netherlands.,University of Groningen
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(creator_code:org_t)
- 2015-11-17
- 2016
- Engelska.
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Ingår i: Journal of Avian Biology. - : Wiley. - 0908-8857 .- 1600-048X. ; 47:3, s. 321-334
- Relaterad länk:
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http://nora.nerc.ac....
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http://dx.doi.org/10...
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https://urn.kb.se/re...
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https://doi.org/10.1...
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https://lup.lub.lu.s...
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Abstract
Ämnesord
Stäng
- The migration of the great snipe Gallinago media was previously poorly known. Three tracks in 2010 suggested a remarkable migratory behaviour including long and fast overland non-stop flights. Here we present the migration pattern of Swedish male great snipes, based on 19 individuals tracked by light-level geolocators in four different years. About half of the birds made stopover(s) in northern Europe in early autumn. They left the breeding area 15 d earlier than those which flew directly to sub-Sahara, suggesting two distinct autumn migration strategies. The autumn trans-Sahara flights were on average 5500 km long, lasted 64 h, and were flown at ground speeds of 25 m s(-1) (90 km h(-1)). The arrival in the Sahel zone of west Africa coincided with the wet season there, and the birds stayed for on average three weeks. The birds arrived at their wintering grounds around the lower stretches of the Congo River in late September and stayed for seven months. In spring the great snipes made trans-Sahara flights of similar length and speed as in autumn, but the remaining migration through eastern Europe was notably slow. All birds returned to the breeding grounds within one week around mid-May. The annual cycle was characterized by relaxed temporal synchronization between individuals during the autumn-winter period, with maximum variation at the arrival in the wintering area. Synchronization increased in spring, with minimum time variation at arrival in the breeding area. This suggests that arrival date in the breeding area is under strong stabilizing selection, while there is room for more flexibility in autumn and arrival to the wintering area. The details of the fast non-stop flights remain to be elucidated, but the identification of the main stopover and wintering areas is important for future conservation work on this red-listed bird species.
Ämnesord
- NATURVETENSKAP -- Biologi -- Zoologi (hsv//swe)
- NATURAL SCIENCES -- Biological Sciences -- Zoology (hsv//eng)
- NATURVETENSKAP -- Biologi -- Ekologi (hsv//swe)
- NATURAL SCIENCES -- Biological Sciences -- Ecology (hsv//eng)
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- ref (ämneskategori)
- art (ämneskategori)
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