| Titre : | Ostrich 72(3-4) - SEP 2001 |
| Type de document : | Bulletin |
| Paru le : | 00/00/0000 |
Dépouillements
Article
D. H. de Swardt, Auteur
Article
K. Eguchi, Auteur ;
H. Nagata, Auteur ;
S. Asai, Auteur ;
S. Yamagishi, Auteur
Article
D. H. de Swardt, Auteur
Article
W. A. Taylor, Auteur ;
J. D. Skinner, Auteur
Article
G. Kopij, Auteur
The feeding ecology of the Southern Bald Ibis, Geronticus calvus, was studied in the Free State Province, South Africa, during two breeding seasons in 1994 and 1996. Fields of harvested maize, burnt grass and overgrazed pastures are the main fee[...]
Article
W. R. J. Dean, Auteur ;
S. J. Milton, Auteur
Comparative surveys of bird species richness and abundance showed that a total of 69 bird species was recorded on 1 km transects (n = 996) through shrubland, with a total estimated density of birds of 32.7 +/- 32.8 (S.D.) birds/km(2), of which r[...]
Article
A. C. Kemp, Auteur ;
K. S. Begg, Auteur
The activity, age, sex and group size was recorded for 10 177 instantaneous samples of 18 species of large (>1 kg) birds in the Kruger National Park, South Africa, during 1991-94. The samples. (75-2816 per species) were compared for four foragin[...]
Article
H. S. Thompson, Auteur
Article
P. LLoyd, Auteur ;
R. M. Little, Auteur ;
T. M. Crowe, Auteur
The breeding biology of the Namaqua Sandgrouse, Pterocles namaqua, was studied and its nesting success determined through the observation of 278 nests over four consecutive breeding seasons at Droegrond, Northern Cape Province, South Africa, The[...]
Article
R. Thorstrom, Auteur ;
L. A. R. de Roland, Auteur
Four nests of the rare and endemic Bernier's Vanga, Oriolia bernieri, were discovered; one in 1997, one in 1998, and two in 1999 on the Masoala Peninsula, northeastern Madagascar, At the 1998 nest, the female made 189 visits with 186 deliveries [...]
Article
J. O. Wirminghaus, Auteur ;
C. T. Downs, Auteur ;
M. R. Perrin, Auteur ;
C. T. Symes, Auteur
Breeding biology and nesting requirements of Cape Parrots in their natural habitat and in captivity were investigated. Few nests were found, suggesting that nest-sites are limiting, and that the parrots have specific nesting requirements. Nests [...]
Article
R. B. Childress, Auteur ;
L. A. Bennun, Auteur
Environmental factors and breeding activity of the White-breasted Cormorant were documented over two breeding seasons (1995/96) at a new 900-nest colony near Lake Naivasha, Kenya (00 degrees 46'S, 36 degrees 22'E), a non-seasonal lake, Breeding [...]
Article
M. Herremans, Auteur ;
M. Louette, Auteur ;
J. Stevens, Auteur
Article
R. J. M. Crawford, Auteur ;
B. M. Dyer, Auteur ;
L. Upfold, Auteur ;
V. L. Ward, Auteur
Some Bank Cormorants, Phalacrocorox neglectus, breed when two years old, but others defer breeding until aged three years. Their mean age at breeding is about 2.5 years. Although some Cape Cormorants, P. capensis, breed when 1.5 years old or les[...]
Article
L. Serra, Auteur ;
D. A. Whitelaw, Auteur ;
A. J. Tree, Auteur ;
L. G. Underhill, Auteur
Data on 355 Grey Plovers, Pluvialis squatorola, ringed in South Africa in 1971-1997 were analysed. Biometrics could not identify Well-defined origins in the Siberian breeding grounds, but suggested the:presence of birds from east of the Gydan Pe[...]
Article
C. Budde, Auteur
This study investigates if vocal monitoring of the Grey Crowned Crane, Balearica regulorum gibbericeps, is a feasible method to monitor their population. The vocal repertoire of the Grey Crowned Crane was analysed for individual, pair and sexual[...]
Article
K. Eguchi, Auteur ;
H. E. Amano, Auteur ;
S. Yamagishi, Auteur
Roosting behaviour, range use and foraging behaviour of non-breeding Sickle-billed Vangas, Falculea palliata, a Malagasy endemic, were studied in the Ankarafantsika Strict Nature Reserve, northwestern Madagascar, in 1996 and 1997. Non-breeding b[...]
Article
R. F. Maloney, Auteur
