Effectiveness of nest protectors in excluding mammalian predators from nest trees of giant ibis Thaumatibis gigantea in Kulen Prumtep Wildlife Sanctuary and Preah Vihear Protected Forest, Preah Vihear province, Cambodia

  • Published source details Keo O., Collar N.J. & Sutherland W.J. (2009) Nest protectors provide a cost-effective means of increasing breeding success in giant ibis Thaumatibis gigantea. Bird Conservation International, 19, 77-82


This study is summarised as evidence for the following.

Action Category

Physically protect nests with individual exclosures/barriers or provide shelters for chicks of storks and ibises

Action Link
Bird Conservation
  1. Physically protect nests with individual exclosures/barriers or provide shelters for chicks of storks and ibises

    A randomised, replicated and controlled study from 2004-2006 in northern Cambodia (Keo et al. 2009) found daily survival rates of nests during the nestling period and average fledging rates were significantly higher for 24 giant ibis Thaumatibis gigantea nests in trees fitted with predator exclusion devices (an 80 cm wide strip of hard, smooth plastic, fitted at least 1.5 m from the ground) than for 28 nests in unprotected trees (daily survival rates of 99.9% for protected vs. 99.3% for unprotected nests, leading to overall survival rates of 90% vs. 61% respectively; and average fledging rates of 1.9 chicks/nest vs. 1.25 chicks/nest respectively). Protected trees were also more likely to be re-used in the next year (73% vs. 9%, 22 trees monitored).


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