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Article
Henning Heldbjerg, Auteur ; Timme Nyegaard, Auteur ; Preben Clausen, Auteur ; Rasmus Due Nielsen, Auteur ; Anthony D. Fox, AuteurWe combined data from two independent Danish citizen science time-series to describe changes in (1) abundance and (2) distribution of 12 wintering populations of geese and swans and tested the hypothesis that increases in national abundance sinc[...]
Article
Stefan Garthe, Auteur ; Verena Peschko, Auteur ; David A. Fifield, Auteur ; Kai Borkenhagen, Auteur ; Timme Nyegaard, Auteur ; Jochen Dierschke, AuteurWe 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 bro[...]
Article
Henning Heldbjerg, Auteur ; Thomas Vikstrom, Auteur ; Timme Nyegaard, Auteur
Article
Hans Meltofte, Auteur ; Michael B. Grell, Auteur ; Peer L. Lindballe, Auteur ; Timme Nyegaard, AuteurDuring all atlas project in Denmark 1993-1996, the breeding birds of small biotopes (ponds, bogs, meadows, commons, heaths) were recorded within 212 squares of 4 km(2), distributed all over Denmark. Small biotopes were defined as ponds of more t[...]
Article
Timme Nyegaard, Auteur ; Hans Meltofte, Auteur ; Jesper Tofft, Auteur ; Michael Borch Grell, Auteur
Article
Anthony D. Fox, Auteur ; Henning Heldbjerg, Auteur ; Timme Nyegaard, AuteurAvian Introduced Alien Species (IAS) constitute a threat to the integrity of native biodiversity, the economy and human health, so here we briefly review some of the problems posed by such species around the world in relation to such bird specie[...]
Article
Erik Ehmsen, Auteur ; Lennart Pedersen, Auteur ; Hans Meltofte, Auteur ; Tscherning Clausen, Auteur ; Timme Nyegaard, AuteurExcept for a number of largely unsuccessful breeding attempts during the second half of the 20th century, the White-tailed Eagle Haliaeetusalbicilla had been absent as a breeding bird in Denmark for more than 80 years, when a population establis[...]
Article
Hans Meltofte, Auteur ; Michael B. Grell, Auteur ; Timme Nyegaard, AuteurPatterns and trends in avian species diversity in Denmark Due to Denmark's location close to the border between the temperate and boreal zones and in-between Europe's Atlantic and continental climates the country harbours high levels of biodiver[...]
Article
Timme Nyegaard, Auteur ; Michael Borch Grell, AuteurThis paper gives an overview of occurrence and population trends of 39 threatened or rare Danish breeding birds, summarizing the results obtained in 2004 by the working group on the monitoring of threatened and rare breeding birds. The monitorin[...]
Article
Timme Nyegaard, Auteur ; Michael Borch Grell, AuteurThis paper gives an overview of occurrence and population trends of 40 threatened or rare Danish breeding birds, summarizing the results obtained in 2005 by the working group on the monitoring of the threatened and rare breeding birds. The monit[...]
