Alpine SteinadlerAquila chrysaetos durch Bleivergiftung gef?hrdet?

In 1990 and 1994, two males of Golden Eagles were found with small lead particles in their stomachs. Both individuals died soon after they had been taken sitting on the soil in bad condition. There are some findings of dead eagles in the same area which showed no sign of having been injured. The two cases of presumed lead poisoning coincide with intense efforts to reduce the number of ChamoixRupicapra rupicapra by hunting. The bullets used contain a nucleus of lead and eagles were seen taking the entrails of the shot chamoix.     

Schriftenschau

Ohne Zusammenfassung     

Bestandsdynamik des Haussperlings (Passer domesticus): 19j?hrige Beobachtungen am Rande eines Siedlungsgebietes der Nordalpen

Zusammenfassung Am Institut für Vogelkunde, dem letzten Gebäude des Siedlungsbereiches Garmisch-Partenkirchen/Oberbayern, erschienen 19 Jahre lang regelmäßig Haussperlinge; nur 1971 kam es zu zwei erfolgreichen Bruten eines Paares. Das saisonale Präsenzmuster (Abb. 1) weist drei Gipfel auf: Beginn der Brutzeit Ende April/Mitte Mai (I); Ende Juni bis August (überwiegend juv.; II); Oktober (überwiegend juv.; III). Im Winter treten nur ausnahmsweise kurzfristig Haussperlinge auf. 4 juv. Fänglinge der Periode II erscheinen in späteren Jahren zu Beginn der Brutzeit. Unzureichendes Nahrungsangebot dürfte die Hauptursache dafür sein, daß der Haussperling nicht bis an den Außenrand des Ortsbereiches vordringt und eine trotz ± regelmäßiger Dispersion sehr scharfe Verbreitungsgrenze seit über 20 Jahren konstant etwa 300 m vom Untersuchungsgebiet entfernt innerhalb eines Villenviertels verläuft.

---

Fluctuations in the House Sparrow (Passer domesticus): 19 years' observations at the margin of a local population

Summary For 19 years House Sparrows have regularly appeared in a small study area around the Institut für Vogelkunde, which is the last house of the small town of Garmisch-Partenkirchen in a valley of the northern Alps (810 m above sea level). Only in 1971 one pair raised two broods. The nearest regular breeding place is 350 m away. During the course of the year three main periods of dispersion could be noticed (cf. fig. 1); at the beginning of the breeding season April/May (I), from the end of June to August (mainly juv.; II), and in October (mainly juv.; III). During winter House Sparrows appeared only exceptionally. 4 juveniles banded in period II visited the area at the beginning of the breeding season in later years. Unsufficient food supply may be the main reason for a very sharp and constant border which marks the breeding distribution of the House Sparrow within the suburb of Garmisch-Partenkirchen; dispersal resp. spacing of juv./ad. birds does not result in regular breeding beyond the areas settled so far.

---

---

Langfristige Vogelbeobachtungen auf Kleinflächen. 2.     

Schriftenschau

Ohne Zusammenfassung     

Situation und Bestand des Steinadlers (Aquila chrysaetos) in Deutschland

The present population of Golden Eagles in Germany consists of 48–50 territorial pairs in the Alps (10 % of them with homeranges extending beyond the border to Austria) and a considerable amount of nonterritorial individuals (mostly immat.). As the production is very low (0.25 resp. 0.18 fledglings/pair x year) nonterritorial birds form an important breeding reserve. At least within last decades, the abundance seemed to be fairly constant. At present, the German population depends on immigration from other parts of the alpine population.     

Schriftenschau

Ohne Zusammenfassung     

Schriftenschau

Ohne Zusammenfassung     

Schriftenschau

Ohne Zusammenfassung