| Titre : | Dansk Ornitologisk Forenings Tidsskrift 92(4) - 1998 |
| Type de document : | Bulletin |
| Paru le : | 00/00/0000 |
Dépouillements
Article
The Red Kite was a common breeder in the southern third of Sweden up to the middle of the last century. Alter a steep decline it was protected in 1919. Estimates of the Swedish population are given in Tab. 1. The Swedish Red Kite Project has bee[...]
Article
Annelise Jensen, Auteur ;
Birger Jensen, Auteur
A survey is given on the winter diet of the Long-eared owl in Denmark, based on a total of 17972 prey specimens from pellets collected during November-March at 20 localities (Fig. 1). This composite material was put together from the literature,[...]
Article
Breeding populations of birds of prey were thoroughly surveyed during the 1970s and early 1980s (Jorgensen 1989). The present paper attempts to update numbers and trends of breeding raptors on basis of results from censuses performed since then [...]
Article
Bjarne Nielsen, Auteur ;
Klaus Dichmann, Auteur
In 1996 we initiated a project aiming at supporting and identifying means to safeguard the dwindling Population of Barn Owls Tyto alba in Denmark, at that time estimated to consist of only about 30 pairs. In 1997 we visited 197 localities on and[...]
Article
The White-tailed Eagle Haliaeetus albicilla was fairly common in Sweden until the early or mid 19th century. but was subsequently brought close to extinction by persecution. When legal protection was enforced in 1924, a few tens of breeding pair[...]
Article
Based on prey items and homing pigeon rings found in Goshawk territories during 21 years in a 2417 km2 study area in northern Jutland, the predation on horning pigeons by Goshawks was investigated. A total of 19670 prey animals were identified a[...]
Article
During the years 1986-1997 the raptor migration over the Falsterbo peninsula was counted during the period from 1 August until 20 November. All birds were aged and sexed as far as possible. The overall seasonal timing ad total proportions of dif[...]
Article
Breeding birds of prey (pairs initiating nest building or repair) were recorded annually (Fig. 2, Appendix 1) in two 100 km2 areas in SE Denmark in 1977-97, and during the mid-1990s in two much larger areas (Tab. 1) which included the two 100 km[...]
