| Titre : | Ostrich 80(1) - APR 2009 |
| Type de document : | Bulletin |
| Paru le : | 00/00/0000 |
Dépouillements
Article
J. H. van Niekerk, Auteur
Article
Carlos Bosque, Auteur
Article
Colleen Downs, Auteur ;
Christian Boix-Hinzen, Auteur ;
Mark Brown, Auteur
This study describes the morphology and investigates the possible function of the air bags found on the nestlings of Monteiro's Hornbill Tockus monteiri. These air bags increased in size with age and mass of the nestling until 14 d of age, and t[...]
Article
H. D. Jackson, Auteur
Article
J. H. van Niekerk, Auteur ;
M. Barendse, Auteur ;
F. Mare, Auteur
The social behaviour of marked Red-necked Spurfowls Pternistis afer was studied at Boknes and Cannon Rock coastal resorts near Alexandria in the Eastern Cape province between January 2001 and June 2008. Red-necked Spurfowls form breeding pairs. [...]
Article
J. H. van Niekerk, Auteur
A survey across the sunflower production region of South Africa during November 2003 to July 2005 estimated the loss of sunflower seeds to columbids (doves and pigeons, Aves: Columbidae). Farmers estimated that 12.7% of the national yield was lo[...]
Article
I. A. Russell, Auteur ;
R. M. Randall, Auteur ;
B. M. Randall, Auteur ;
N. Hanekom, Auteur
The Wilderness Lakes system, comprising three estuarine lakes (Eilandvlei, Langvlei and Rondevlei), supports a diverse waterbird community, which includes 12 duck species and the abundant Red-knobbed Coot Fulica cristata. Biannual counts of wate[...]
Article
Philip A. R. Hockey, Auteur ;
Guy F. Midgley, Auteur
Evidence from the Northern Hemisphere and simple theoretical models both predict that climate change could force southern African birds to undergo poleward range shifts. We document the chronology and habitat use of 18 regionally indigenous bird[...]
Article
David H. Maphisa, Auteur ;
Paul F. Donald, Auteur ;
Graeme M. Buchanan, Auteur ;
Peter G. Ryan, Auteur
Habitat use and breeding ecology of the threatened and poorly known Rudd's Lark Heteromirafra ruddi were studied in south-eastern Mpumalanga, South Africa, from October 2002 to April 2004. Data were also collected incidentally on the equally poo[...]
Article
Munir Z. Virani, Auteur ;
David M. Harper, Auteur
The breeding performance of the Augur Buzzard Buteo augur in 1995-1998 was compared between three different areas south of Lake Naivasha, Kenya. These were: (1) a national park (Hell's Gate), (2) an undisturbed Acacia woodland-pasture (Mundui) a[...]
Article
Kevin Y. Njabo, Auteur ;
Michael D. Sorenson, Auteur
We determined the systematic relationships and approximate divergence time of Bannerman's Turaco Tauraco bannermani and used this information to test whether the origin and distribution of this species and its closest relatives are associated wi[...]
