Adult Gannet migrations frequently loop clockwise around Britain and Ireland.

Furness, Robert W., Hallgrimsson, Gunnar T., Montevecchi, William A., Fifield, David, Kubetzki, Ulrike, Mendel, Bettina and Garthe, Stefan (2018) Adult Gannet migrations frequently loop clockwise around Britain and Ireland. Open Access Ringing & Migration, 33 . pp. 1-9. DOI 10.1080/03078698.2018.1472971.

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Abstract

The Gannet Morus bassanus is one of the seabirds considered most at risk from collision mortality at offshore wind farms in UK waters, so a better understanding of migration routes informs assessments of risk for different populations. Deployment of geolocators on breeding adults at the Bass Rock, Scotland, and Skrúður, Iceland, showed that the timing of migrations differed between populations, birds from Bass Rock passing south through UK waters mostly in October and back in February while birds from Skrúður passed south through UK waters mostly later, in November, but returned north earlier, in January. Many birds from both colonies made a clockwise loop migration around Britain and Ireland. Only a minority of birds from the Bass Rock returned northwards to the colony through the southern North Sea. A counter-intuitive consequence is that many Gannets moving northwards through waters to the west of Britain and Ireland in spring may be birds from North Sea colonies. Although Gannets normally remain over the sea, one tracked bird appears to have made a short overland passage in spring from the west of Scotland through central Scotland to the Bass Rock, whereas most returned around the north of Scotland.

Document Type: Article
Research affiliation: Kiel University > Kiel Marine Science
OceanRep > The Future Ocean - Cluster of Excellence
Kiel University
Refereed: Yes
Open Access Journal?: No
DOI etc.: 10.1080/03078698.2018.1472971
ISSN: 0307-8698
Projects: Future Ocean
Date Deposited: 31 Jul 2018 11:17
Last Modified: 27 Mar 2019 11:04
URI: http://oceanrep.geomar.de/id/eprint/43867

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