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Documents disponibles écrits par cet auteur (12)
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Article
Manfred Kraus, Auteur ; Werner Krauss, Auteur150 years have passed since the beginning of the avifaunistic investigation by Andreas Johannes Jaeckel at the "Franconian Pond Area". For this reason the avifauna of the second half of the 19th century is being reconstructed and compared with t[...]
Article
It must be assumed that the American Wigeon Anas americana found 1990 on a pond in a park and another one amongst Mallards fed by people 1981 were no wild birds. Two young males, however, one shot Oct 10, 1992 at the fishponds near Hochstadt/Ais[...]
Article
Manfred Kraus, Auteur ; Werner Krauss, AuteurIn 2006 breeding of Night Heron was proved for the first time in the Franconian Pond Area, i.e. a part of Bavaria situated to the north of the Danube. Two occupied nests were found. From the end of May until the middle of August up to six adults[...]
Article
Manfred Kraus, Auteur ; Werner Krauss, AuteurAll four Aythya species occuring in the area are being documented regarding frequency, phenology and development of population of the three breeding species. It has been proved that Ferruginous Duck A. nyroca bred at the "Franconian Pond Area" f[...]
Article
Werner Krauss, Auteur ; Manfred Kraus, AuteurSince 1950 706 data sets of 3456 birds were recorded. The Goldeneye is a regular migrant and winter visitor. It was recorded in all winters since 1959. Nevertheless actual overwintering is not evident. Oversummering is unknown, too, although rec[...]
Article
Manfred Kraus, Auteur ; Werner Krauss, AuteurLittle Grebe Tachybaptus ruficollis: Breeding bird, moderately migratory A slight long-term decline of resting birds is noticeable. The breeding status varies around an average of 51 pairs (between 28 to 78), tendency falling.Great Crested Grebe[...]
Article
Manfred Kraus, Auteur ; Werner Krauss, AuteurCommon Snipe: No trend regarding sequence of migration and quantitative ratio 1 to 8 of home passage to departure can be ascertained. The number of migratory birds, however, dropped by 84%. An increasing tendency of overwintering is statisticall[...]
Article
Manfred Kraus, Auteur ; Werner Krauss, Auteur359 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
Manfred Kraus, Auteur ; Werner Krauss, AuteurSince 1950 3657 observations of 28,770 individuals Ardeidae have been recorded in the Franconian Pond Area. 56% of the observations refer to Grey Heron, followed by Little Bittern, Bittern, Great White Egret, Purple Heron, Night Heron, Little Eg[...]
Article
Manfred Kraus, Auteur ; Wener Krauss, AuteurThere were 358 records (12%) of 3079 Mallards ringed in the winter months between 1 Jan 82 and 30 Dez 89.82% of the records occurred by hunting, overproportionately more males than females were shot. The mortality averaged 45%, the life expectat[...]
Article
Manfred Kraus, Auteur ; Werner Krauss, AuteurThis is a report on 16 Anserinae which were observed at the "Frankonian Pond Area". Due to the assistance of several reliable helpers 3374 data could be evaluated. The three species of breeding birds, Mute Swan, Greylag Goose and Canada Goose th[...]
Article
Manfred Kraus, Auteur ; Werner Krauss, Auteur5142 dates were collected of six species of the genus Tringa at this area. The results are as follows:Spotted Redshank Tringa erythropus: Regular passage migrant, no record from December to February, daily maximum of at least 200 individuals.Red[...]
