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Article
Dina Abdelhafez Ali Mostafa, Auteur ; Mikkel Willemoes, Auteur ; Volker Salewski, Auteur ; Troels Eske Ortvad, Auteur ; Torben Dabelsteen, Auteur ; Kasper Thorup, AuteurIn migratory birds, constraints due to breeding are relaxed during the non-breeding season and thus, social behaviours and spatial associations are potentially more directly coupled to food resources and habitats. Use of space and territorial be[...]
Article
The first Danish Ring-billed Gull Larus delawarensis stayed in southern Jutland during the period 15 May - 14 June 1999. It was in adult plumage, although the fact that only the outermost primary had a (minor) subterminal spot may possibly have [...]
Article
Kasper Thorup, Auteur ; Troels Eske Ortvad, Auteur ; Richard A. Holland, Auteur ; Jorgen Rabol, Auteur ; Mikkel Willemoes Kristensen, Auteur ; Martin Wikelski, AuteurMigratory birds are frequently found far outside their normal range but the phenomenon is poorly understood. We used radio telemetry to track individual migratory flights of several species of songbirds on the Faroe Islands, far west of their no[...]
Article
Troels Eske Ortvad, Auteur ; Knud Pedersen, Auteur ; Kasper Thorup, AuteurIn 2001 the Danish Rarities Committee (Sjaeldenhedsudvalget, SU) processed 165 Danish records (including 12 records on behalf of the regional reports) of which 78% were accepted. Four records from Greenland were all accepted. The main section of[...]
Article
Troels Eske Ortvad, Auteur ; Jan Hjort Christensen, Auteur ; Tim Hesselballe Hansen, Auteur ; Andreas Bruun Kristensen, Auteur ; Kent Olsen, Auteur ; Knud Pedersen, Auteur ; Palle Ambech Fraende Rasmussen, Auteur ; Michael Schwalbe, AuteurThe Danish bird list has been revised by the Rarities Committee of the Danish Ornithological Society. The revision entailed a standardized reassessment of the documentation of all known records up to and including 2013 of species having 1-3 acce[...]
