Summary of Sample analysed Species Number Number Proportion Number Mean tagged of birds of birds re- of re- number of re-sighted sighted (%) sightings re-sightings per bird Cape Vulture 8 6 75 27 3.4 African White-backed 93 93 100 3529 37.9 Vulture Hooded Vulture 3 3 100 81 27.0 Marabou Stork 17 16 94 807 47.5 Total 121 118 98 4444 36.7
Summary of AWBV’s by Age Age (years) Number 2 10 3 32 4-6 44 ≥7 7 Total 93
AWBV’s tagged per year 80 70 60 50 40 Tagged AWBV 30 20 10 0 2005 2006 2007 2008
Re-sightings per Annum 1400 1200 1000 800 AWBV Re-sightings recorded 600 400 200 0 2005 2006 2007 2008 2009 2010
AWBV Survival 1.01 1 0.99 0.98 0.97 Survival 0.96 0.95 0.94 0.93 2006 2007 2008 2009
Conclusions Confirms the value patagial tagging • – various aspects of large bird movements – foraging range – survival Concerted re-sighting effort • required Survival rates for AWBV are very • high – requires more detailed analyses Tagging did not affect survival •
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