| Titre : | Limosa 77(1) - 2004 |
| Type de document : | Bulletin |
| Paru le : | 00/00/0000 |
Dépouillements
Article
Pim Edelaar, Auteur ;
Magnus Robb, Auteur ;
Kees van Eerde, Auteur ;
Kees Terpstra, Auteur ;
Rob Bijlsma, Auteur ;
Erik Maassen, Auteur
Dans
Limosa (77(1) 2004)
Recent studies have shown that in The Netherlands the Common Crossbill occurs in several 'vocal types'. Vocal types are discrete groups of individuals that are categorised by their flight and excitement calls (Fig. 1). The biological and taxonom[...]
Article
Stef van Rijn, Auteur ;
Jeroen Nienhuis, Auteur
Dans
Limosa (77(1) 2004)
Traditionally, numbers of wintering Great Cormorants in the Netherlands are derived from January count for the International Waterbird Census (IWC) of Wetlands International. However, as the species has become widespread and also inhabits small [...]
Article
Jan Schoppers, Auteur
Dans
Limosa (77(1) 2004)
During the 20th century several national surveys of breeding Rook have been carried out in the Netherlands. Initially, these surveys aimed-to collect population figures in order to undertake management measures. Nowadays they are part of nationa[...]
Article
Joop Jukema, Auteur ;
Theunis Piersma, Auteur
Dans
Limosa (77(1) 2004)
We describe the existence of small-sized male Ruffs Philomachus pugnax with a female-like breeding plumage that may represent a third reproductive strategy within the complex mating system of this enigmatic and highly sexual dimorphic shorebird [...]
