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Multistate estimates of survival and movement in relation to colony size in the sociable weaver
We estimated survival and movement probabilities in relation to breeding-colony size in the sociable weaver (Philetairus socius) by using multistate statistical methods, in which survival andExpand
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JUVENILE AND ADULT SURVIVAL IN THE SOCIABLE WEAVER (PHILETAIRUS SOCIUS), A SOUTHERN-TEMPERATE COLONIAL COOPERATIVE BREEDER IN AFRICA
Abstract We used capture-recapture analyses to describe juvenile and adult survival from 1993 to 2001 in a population of Sociable Weavers (Philetairus socius), a colonial, cooperatively breedingExpand
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Trade-offs between specificity and regional generality in habitat association models: a case study of two species of African vulture
Summary 1.  The habitat requirements of various species have been evaluated by statistical models. However, recent studies have shown that models are often not transferable between regions,Expand
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Raptor conservation in the Northern Cape Province, South Africa
Anderson, M.D. 2000. Raptor conservation in the Northern Cape Province, South Africa. Ostrich 71 (1 & 2): 25–32. The semi-arid Northern Cape is the largest and most sparsely populated province inExpand
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Climate, social factors and research disturbance influence population dynamics in a declining sociable weaver metapopulation
Population trends are determined by gains through reproduction and immigration, and losses through mortality and emigration. These demographic quantities and resulting population dynamics areExpand
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Non-steroidal anti-inflammatory drug use in south africa and possible effects on vultures
It has recently been shown that a non-steroidal anti-inflammatory drug (NSAID), sodium diclofenac (diclofenac), has been responsible for the catastrophic decline in the populations of threeExpand
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Activity patterns of African White-backed Vultures Gyps africanus in relation to different land-use practices and food availability
Changing patterns in land use in relation to the breeding distribution and foraging behaviour of the African White-backed Vulture Gyps africanus were investigated around Kimberley, South Africa.Expand
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The Risk of Flawed Inference in Evolutionary Studies When Detectability Is Less than One
Addressing evolutionary questions in the wild remains a challenge. It is best done by monitoring organisms from birth to death, which is very difficult in part because individuals may or may not beExpand
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When to stay , when to go : trade-offs for southern African arid-zone birds in times of drought
Introduction Prolonged spells of drought pose dilemmas for most organisms, even those adapted to hyper-aridity. For birds, reproduction, feeding, dispersal and moult are all activities which may needExpand
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Aardwolf adaptations: a review
The aardwolf Proteles cristatus has developed a number of anatomical and morphological adaptations for feeding on its termite prey. These adaptations preclude the aardwolf from feeding on other,Expand
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