Migratory pathways and winter destinations of Northern Gannets breeding at Helgoland (North Sea): known patterns and increasing importance of the Baltic Sea

Author:

Garthe StefanORCID,Peschko Verena,Fifield David A.,Borkenhagen Kai,Nyegaard Timme,Dierschke Jochen

Abstract

AbstractWe analysed the migratory behaviour of adult Northern Gannets (Morus bassanus) breeding at Helgoland in the North Sea, based on data obtained from geolocation devices in the non-breeding season 2016–2017. Birds moved east and south-west to a broad range of wintering sites, ranging from the western Baltic Sea to North-West Africa. Three out of 12 birds spent the winter in Africa, while 9 birds wintered in Europe, with the primary wintering sites in the North Sea. All but one tagged bird spent some time in the Baltic Sea or in the transitional waters between the North Sea and Baltic Sea. We also analysed data from online databases (dofbasen.dk, ornitho.de) and the German Seabirds at Sea database to explore the extent to which Northern Gannets used the western Baltic Sea, as well as the Kattegat and Skagerrak, during the winter months. Records of Northern Gannets in Danish waters have increased substantially over the last 18 winters, with particular increases in the Baltic Sea. There was also a notable increase in sightings of Northern Gannets in German Baltic Sea waters, but this occurred later than in the more northerly Danish waters. Both analyses demonstrated that Northern Gannets explored the western part of the Baltic Sea, as well as the Kattegat and Skagerrak, increasingly intensively. This recent increase in sightings is in accord with the establishment and exponential increase in the nearest breeding colony of Northern Gannets at Helgoland.

Funder

Bundesministerium für Wirtschaft und Energie

Bundesamt für Naturschutz

Christian-Albrechts-Universität zu Kiel

Publisher

Springer Science and Business Media LLC

Reference44 articles.

1. Bairlein F, Dierschke J, Dierschke V, Salewski V, Geiter O, Hüppop K, Köppen U, Fiedler W (2014) Atlas des Vogelzuges. Ringfunde deutscher Brut- und Gastvögel. Aula-Verlag, Wiebelsheim

2. Barrett RT (2016) Diet of Northern Gannet Morus bassanus chicks in North Norway. Ornis Norvegica 39:45–52

3. Berndt RK, Drenckhahn D (1974) Vogelwelt Schleswig-Holsteins. 1. Band: Seetaucher bis Flamingo. Kiel.

4. Burnell D, Perkins AJ, Newton SF, Bolton M, Tierney TD, Dunn TE (2023) Seabirds count. A census of breeding seabirds in Britain and Ireland (2015–2021). Lynx Nature Books, Barcelona

5. Camphuysen CJ, Fox AD, Leopold MF, Petersen IK (2004) Towards standardised seabirds at sea census techniques in connection with environmental impact assessments for offshore wind farms in the U.K. A comparison of ship and aerial sampling methods for marine birds, and their applicability to offshore wind farm assessments. https://tethys.pnnl.gov/sites/default/files/publications/Camphuysen-et-al-2004-COWRIE.pdf. Accessed 11 May 2024

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