| Titre : | Dansk Ornitologisk Forenings Tidsskrift 100(2) - 2006 |
| Type de document : | Bulletin |
| Paru le : | 00/00/0000 |
Dépouillements
Article
Since 1993, the number of breeding pairs has been estimated in Danish Sandwich Tern Sterna sandvicensis colonies by nest counts conducted in mid-late May by experienced counters. The results, reflecting minimum estimates of the actual breeding p[...]
Article
Hans Meltofte, Auteur ;
Dorthe Prip Lahrmann, Auteur
During the summer of 2000, a preliminary study on time allocation in four arctic wader species (Common Ringed Plover Charadrius hiaticula, Sanderling Calidris alba, Dunlin C. alpina, Ruddy Turnstone Arenaria interpres) was conducted at Zackenber[...]
Article
Timme Nyegaard, Auteur ;
Michael Borch Grell, Auteur
This 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[...]
Article
Lars Bo Jacobsen, Auteur ;
Torben Dabelsteen, Auteur
Acoustic signals are important communication means in birds, especially in nocturnal owls where calls may constitute the only option for individual recognition. Studies of a number of owl species have now confirmed that their territorial calls a[...]
