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Auteur David G. Allan |
Documents disponibles écrits par cet auteur (3)
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Article
Oluwadunsin E. Adekola, Auteur ; David G. Allan, Auteur ; Zephné Bernitz, Auteur ; Wiseman Dlungwana, Auteur ; Peter G. Ryan, AuteurAmur Falcons Falco amurensis undergo one of the most extreme migrations of any raptor, crossing the Indian Ocean between their Asian breeding grounds and non-breeding areas in southern Africa. Adults are thought to replace all their flight feath[...]![]()
Article
Jessica M. Shaw, Auteur ; Andrew R. Jenkins, Auteur ; David G. Allan, Auteur ; Peter G. Ryan, AuteurLudwig's Bustard Neotis ludwigii is globally Endangered' because of a projected population decline resulting from high collision mortality on power lines throughout its southern African range. Population monitoring is key to the effective conser[...]![]()
Article
Sonja C. Krueger, Auteur ; David G. Allan, Auteur ; Andrew R. Jenkins, Auteur ; Arjun Amar, AuteurTerritory occupancy, distribution and density of the isolated Bearded Vulture Gypaetus barbatus meridionalis population in the Maloti-Drakensberg mountains of southern Africa were assessed between two time periods - former (1960-1999) and curren[...]



