| Titre : | Ostrich 80(3) - NOV 2009 |
| Type de document : | Bulletin |
| Paru le : | 00/00/0000 |
Dépouillements
Article
C. N. Warui, Auteur ;
K. H. Erlwanger, Auteur ;
E. Skadhauge, Auteur
In birds, the ability to void urine separate from faeces is unique to ostriches. To further explore this characteristic, the anatomy of the terminal rectum and cloaca of the Ostrich Struthio camelus was studied in four ostriches by gross anatomi[...]
Article
G. Malan, Auteur ;
N. Seoraj-Pillai, Auteur ;
M. A. du Plessis, Auteur
This paper investigates, through experiments using surrogate predators, differences in intraspecific alarm calls between familiar and unfamiliar Bronze Mannikin Spermestes cucculatus groups. Four groups of mannikins were captured with mist nets [...]
Article
J. W. Wilson, Auteur ;
C. T. Symes, Auteur ;
M. Brown, Auteur ;
B. T. Bonnevie, Auteur ;
D. H. de Swardt, Auteur ;
D. Hanmer, Auteur
There is confusion in the literature concerning the taxonomic status of the Turdus smithi - T. olivaceus species complex. Here we attempt to clarify morphological differences within this complex. In addition, we attempt to clarify identification[...]
Article
Andre Boshoff, Auteur ;
Adri Barkhuysen, Auteur ;
Greg Brown, Auteur ;
Michael Michael, Auteur
Migratory behaviour has been reported for several Old World vulture species, but not for the Cape Griffon (Cape Vulture) Gyps coprotheres. Analysis of opportunistically obtained Cape Griffon distributional data from the Eastern Cape province of [...]
Article
Rutledge S. Boyes, Auteur ;
Michael R. Perrin, Auteur
The diet of Meyer's Parrot Poicephalus meyeri in the Okavango Delta, Botswana, was distinctly seasonal, comprising 71 different food items from 37 tree species in 16 families. During 480 road transects over 24 months, food item preferences close[...]
Article
Carlos Palacín, Auteur ;
Juan Carlos Alonso, Auteur
To document the population trend of the Little Bustard in north-west Africa, we performed an extensive literature review, and conducted six surveys in seven areas with potentially suitable habitat in north-western Morocco between 1999 and 2005. [...]
Article
Taku Awa Il, Auteur ;
Malcolm D. Burgess, Auteur ;
Ken Norris, Auteur
Radiotelemetry is an important tool used to aid the understanding and conservation of cryptic and rare birds. The two bird species of the family Picathartidae are little-known, secretive, forest-dwelling birds endemic to western and central Afri[...]
Article
Robert J. M. Crawford, Auteur ;
Les G. Underhill, Auteur ;
Res Altwegg, Auteur ;
Bruce M. Dyer, Auteur ;
Leshia Upfold, Auteur
The number of Kelp Gulls Larus dominicanus breeding at 11 islands in South Africa's Western Cape province increased during the period 1978 to 1999-2000 and then decreased. The increase came after removal of controls on gulls and was associated w[...]
Article
Andrew J. Bamford, Auteur ;
Ara Monadjem, Auteur ;
Ian C. W. Hardy, Auteur
Carcass utilisation by vultures may be constrained by the surrounding vegetation, as high vegetation densities may leave insufficient space for the vultures to take-off. We tested this by placing carcasses at 14 sites differing in density and he[...]
