| Titre : | Ostrich 75(1-2) - MAR 2004 |
| Type de document : | Bulletin |
| Paru le : | 00/00/0000 |
Dépouillements
Article
H. H. Berry, Auteur ;
R. Kyle, Auteur ;
D. Kyle, Auteur
Data collected in Etosha National Park during April 1978 are reviewed and compared with subsequent studies on Red-billed Queleas in Namibia and elsewhere. The 1978 colony was estimated to hold 4.8 million adults and 4.8 million fledglings, which[...]
Article
B. Childress, Auteur ;
D. Harper, Auteur ;
B. Hughes, Auteur ;
W. van den Bossche, Auteur ;
P. Berthold, Auteur ;
U. Querner, Auteur
The Lesser Flamingo (Phoeniconaias minor) is thought to be highly nomadic. In East Africa, the number of individuals on a given lake has been shown to double or halve in a period of just two weeks. In general, interlake movements are believed to[...]
Article
R. Yosef, Auteur ;
N. Chernetsov, Auteur
Migrating Sedge Warblers Acrocephalus schoenobaenus were captured in Eilat, Israel, during their spring and autumn migration. Data on spring and autumn body masses, their interannual variation and the pattern of fuel accumulation were analysed. [...]
Article
G. Malan, Auteur
This study investigates if the reproductive performance of polyandrous Pale Chanting-goshawks, Melierax canorus, is governed by the abundance of dominant rodent-prey species or a co-breeding male participating fully in prey being delivered to th[...]
Article
V. Salewski, Auteur ;
K. Falk, Auteur ;
F. Bairlein, Auteur ;
B. Leisler, Auteur
Article
J. H. van Niekerk, Auteur ;
C. van Ginkel, Auteur
Feeding behaviour of pigeons and doves on sown grain crops was studied on the South African Highveld during 1998-2002. Plots of grains (sunflower, sorghum and maize) were planted on the farm Nooitgedacht near Heidelberg (South Africa) to study t[...]
Article
B. T. Bonnevie, Auteur ;
AJFK Craig, Auteur ;
P. E. Hulley, Auteur
Article
R. Libois, Auteur ;
A. Laudelout, Auteur
Several species of kingfisher occur on Lake Nokoue, southern Benin, including Malachite (Alcedo cristata) and Pied Kingfishers (Ceryle rudis). Here, we compare their diet and estimate the degree of overlap in food niche by analysing contents of [...]
Article
J. E. Rakotoarisoa, Auteur ;
B. Be, Auteur
The endemic Scaly Ground-roller Geobiastes squamigerus was studied during two breeding seasons from October 1997 to January 1999 in Masoala National Park, Madagascar. Several vocalisations were associated with territorial defence, contact, excit[...]
Article
R. Yosef, Auteur ;
L. Fornasari, Auteur
Visual migration surveys, especially at bottlenecks, can be a vital tool to evaluate population fluctuations in environmentally sensitive species. Raptors are considered to be important bioindicators that can help identify environmental catastro[...]
Article
M. Z. Virani, Auteur ;
D. M. Harper, Auteur
A comparative study of the breeding behaviour of the Augur Buzzard Buteo augur was made in two contrasting areas on the southern side of Lake Naivasha, Kenya. Hell's Gate National Park represented a natural site, and the lake environs an agricul[...]
Article
H. D. Jackson, Auteur ;
C. Spottiswoode, Auteur
Nocturnal trapping and ringing of swallows around Harare, Zimbabwe, showed that at least five species have adapted their breeding behaviour to manmade road culverts, none more so than the Red-breasted Swallow, Hirundo semirufa, which may be foun[...]
Article
H. D. Jackson, Auteur
Use of a night-vision telescope, with a Pocket Memo for recording a running commentary, allowed the courtship displays of a male Pennant-winged Nightjar, Semeiophorus vexillarius, near the Muneni River (18degrees59'S, 32degrees41'E, 1000m), Zimb[...]
