| Titre : | Ostrich 80(2) - JUN 2009 |
| Type de document : | Bulletin |
| Paru le : | 00/00/0000 |
Dépouillements
Article
Andre Boshoff, Auteur ;
Steven Piper, Auteur ;
Michael Michael, Auteur
The Cape Griffon Gyps coprotheres, a southern African endemic, is considered to have undergone an overall decrease in range and numbers. To track the species' status, and to evaluate the impacts of conservation actions, it is periodically necess[...]
Article
Gerard Malan, Auteur ;
Deborah A. Hagens, Auteur ;
Quentin A. Hagens, Auteur
This study investigates the breeding success of two tropical seabirds that exploit dissimilar nesting habitats on Cousine Island in the Seychelles archipelago, the White Tern Gygis alba and the White-tailed Tropicbird Phaethon lepturus, which ne[...]
Article
Shannon L. Hampton, Auteur ;
Peter G. Ryan, Auteur ;
Les G. Underhill, Auteur
Concerns have been expressed over the impact of flipper banding on the survival and reproductive performance of penguins. This study compared the breeding success of banded and unbanded African Penguins Spheniscus demersus at Boulders Beach, Sou[...]
Article
J. Braby, Auteur ;
R. J. Braby, Auteur ;
N. Braby, Auteur ;
R. E. Simmons, Auteur
Because resources and funds available for the conservation management of many threatened species are limited, it is important to determine the effectiveness of different conservation measures aimed at protecting threatened species. The globally [...]
Article
W. Richard, Auteur ;
J. Dean, Auteur
Article
Les G. Underhill, Auteur ;
Mark D. Anderson, Auteur
Article
H. R. Hepburn, Auteur
Article
H. Dieter Oschadleus, Auteur
Article
Stefan Leitner, Auteur ;
Peter Mundy, Auteur ;
Cornelia Voigt, Auteur
This paper describes size and body condition of individuals in a population of the cooperatively breeding White-browed Sparrow-Weaver Plocepasser mahali in south-western Zimbabwe in relation to the birds' social status within their colony. We un[...]
Article
Les G. Underhill, Auteur ;
Richard B. Sherley, Auteur ;
Bruce M. Dyer, Auteur ;
Robert J. M. Crawford, Auteur
Article
Rutledge S. Boyes, Auteur ;
Michael R. Perrin, Auteur
There are distinct differences in the way in which Poicephalus parrots utilise food resources within their distributional range. Our study evaluated the niche metrics of all Poicephalus parrots studied thus far for evidence of linkages between b[...]
