| Titre : | Vogelwarte 54(2) - 2016 |
| Type de document : | Bulletin |
| Paru le : | 01/06/2016 |
Dépouillements
Article
Bernd Leisler, Auteur
That nest structure and characteristics are primarily the result of natural selection was, until recent years, thought to be selfevident. In addition, it has been shown for a whole series of bird species that number, size, or quality of nests bu[...]
Article
Maria Hoi-Leitner, Auteur ;
Elisabeth Wiedenegger, Auteur ;
Sabine Hille, Auteur
In Vienna, Austria, a first extensive census of Jackdaws (Corvus monedula) revealed a total of 697 breeding pairs at 387 sites. A proportion of only 1.6 % of these sites was occupied by single breeding pairs. Population density exhibited 2.5 bre[...]
Article
Bert Meister, Auteur ;
Ulrich Köppen, Auteur ;
Olaf Geiter, Auteur ;
Wolfgang Fiedler, Auteur ;
Franz Bairlein, Auteur
Since the mid 1990s the three German Vogelwarten operate a Constant Effort Ringing Scheme (“Integriertes Monitoring von Singvogelpopulationen; IMS”) aiming to obtain besides population indices productivity indices and estimates of survival rates[...]
