Rétisas (Haliaeetus albicilla) fészkelési adatok az alsó Duna-völgyben 1987-2002

Kalocsa, Béla and Tamás, Enikő Anna (2003) Rétisas (Haliaeetus albicilla) fészkelési adatok az alsó Duna-völgyben 1987-2002. MAGYAR VÍZIVAD KÖZLEMÉNYEK, 10. pp. 301-307. ISSN 1416-1389

Preview

Text magyar-vizivad-kozlemenyek-2003-10-301-307.pdf - Published Version Download (2MB) | Preview

Abstract

Population changes of the White-tailed Eagle (Haliaeetus albicilla) in the lower Hungarian Danube-valley, 1987-2003. Within the frame of the White-tailed Eagle Conservation Programme of the Hungarian Ornithological and Nature Protection Society we have been carrying out investigations since 1987 in the study area. The study area covers the Danube stretch between Dunaföldvár and the southern country border, the Danube valley from Fajsz to the southern country border, the Danube regions of the Danube-Drava National Park and, it contains the southwesternmost parts of the Kiskunsági National Park area. In order to map natural values we perform thorough field excursions all year round. We explore the nests of raptors and Black storks from autumn to spring. From the analysis of nesting data the extreme site fidelity of White-tailed Eagles can clearly be seen. The most threatening factor from the viewpoint of nesting is evidently forestry. We have recorded the nesting of Sakers (Falco cherrug) in nine reviers of White-tailed Eagles so far. Apart from nesting threats high voltage electric poles can be considered as the most important affecting factor. As a conclusion of the analysis of the collected data we can state that the population is stable, the number of breeding pairs is increasing. The importance of co-operation with the neighbouring countries is extraordinary. As White-tailed Eagles evidently prove that the Danube valley as habitat does not end at the country border, their protection is a task that can only be fulfilled with a long-term international co-operation based on unified attitudes and methodology.

Actions (login required)

Edit Item