| Titre : | Ornithologischer Anzeiger 39(2-3) - September, 2000 |
| Type de document : | Bulletin |
| Paru le : | 00/00/0000 |
Dépouillements
Article
Manfred Kraus, Auteur ;
Werner Krauss, Auteur
359 data sets of 1297 Red-crested Pochards were gained in 3854 excursions at the Franconian Pond District since 1950. The literature before 1950 is being considered. An increase of occurrence is noticeable since 1953. Observations exist in almos[...]
Article
The present expansion of Collared Dove in Morocco, Algeria and Tunisia is described. S. decaocto has spread in Morocco from Meknes (1986) along the Atlantic coast south to Dukhla and Ad-Deheb (1998) and inland to Boulmane, Erfoud and Merzouga. I[...]
Article
Andreas von Hessberg, Auteur ;
Carl Beierkuhnlein, Auteur
Within the palaearctic-boreal range of the capercaillie, many Central European populations are considered to be very endangered. In the Fichtelgebirge (Northeastern Bavaria), the native population declined during the past years and is considered[...]
Article
Eberhard von Krosigk, Auteur ;
Peter Koehler, Auteur
Following a significant reduction of nutrients, the trophic state of the Ramsar site "Ismaninger Speichersee mit Fischteichen" turned between 1988 and 1999 from polytrophic to eutrophic in the reservoir and from hypertrophic to polytrophic in th[...]
Article
The abundance and distibution of breeding Mergus merganser in southern Bavaria and Austria was analysed. Over the last seven decades the development was correlated with the annual mud content of six representative rivers in the breeding area. It[...]
Article
Christian Brummer, Auteur ;
Thomas Grossmann, Auteur ;
Karl Trellinger, Auteur
A redshank (Tringa totanus) passed the whole winter 1997/98 at the Echinger Stausee (Lower Bavaria), most likely the first documented hibernation in Bavaria.
Article
Pied Wheatear were observed in the Konacke plateau, 40 km SE of Titov Veles, Macedonia, in May (breeding season) and September 1989.
Article
September 9th, 1998, I performed a special count for migrating Pied Flycatchers Ficedula hypoleuca in the city of Karlsruhe (Baden-Wurttemberg). A minimum of 300 individuals was counted this day, a new maximum for this species for Baden-Wurttemb[...]
Article
Milan Vogrin, Auteur ;
Nusa Vogrin, Auteur
An overview of the status of the Mute Swan Cygnus olor in Slovenia is presented. First breeding in the wild took place in 1982 in the northern part of the country. Today about 50 breeding pairs are present in the country, about half of them alon[...]
Article
Wintering of the wigeon on the small river Moosach (southern Bavaria, district of Rosenheim) was studied since December 1993. Maximum numbers reached 80 to 90 ducks in midwinter (e.g. 1993/94, 1998/99 and 1999/00), but flock size varied daily an[...]
Article
During the period 1995 to 1999, 340 nests containing 619 nestlings of Stock Doves were monitored. All breeding took place in nest boxes. Almost 47 % of the nestlings came from second broods. Nearly 9 % of nestlings were found dead. The average n[...]
Article
In this study the breeding population of jackdaws in a part of southern Bavaria (770 km2) was examined. I found approx. 150 breeding pairs (this means a population density of 0.19 BP/km2). About 20 % of the population are nesting in buildings an[...]
Article
In 1999 Middle Spotted Woodpeckers have been censused at the 'Stromberg', about 40 km north of Stuttgart. The study area covers 122 square kilometres and comprises 7920 ha of woodland, with a high percentage of oak trees. 19 random sample plots [...]
Article
Volker Zahner, Auteur ;
Harald Loy, Auteur
In 1998 a tree cavity nesting population of Swift (Apus apus) was rediscovered in the Spessart, an area of former occurrence. Potential breeding places of swift were mapped and showed a cavity density of 11 per ha. Over 75 % of all tree holes we[...]
Article
Ursula Koehler, Auteur ;
Peter Koehler, Auteur ;
Ursula Firsching, Auteur ;
Eberhard von Krosigk, Auteur
A significant reduction of nutrients in the waters of the Ramsar-site "Ismaninger Speichersee mit Fischteichen" caused a reduced production of food for the waterfowl populations moulting there. Since 1994, some species decreased dramatically, ma[...]
