Rodent control decreases predation on artificial nests in O'ahu 'Elepaio habitat

  • Published source details VanderWerf E.A. (2001) Rodent control decreases predation on artificial nests in O'ahu 'Elepaio habitat. Journal of Field Ornithology, 72, 448-457.


This study is summarised as evidence for the following.

Action Category

Control mammalian predators on islands for songbirds

Action Link
Bird Conservation
  1. Control mammalian predators on islands for songbirds

    A before-and-after study on O’ahu, Hawaii, USA, in 1998 (VanderWerf 2001), found that predation rates on artificial O’ahu ‘elepaio Chasiempis sandwichensis ibidis nests were significantly lower following intensive rodent control compared to before control began.  There was a 55% reduction in predation rate for 40 nests placed on the ground and a 45% reduction for 40 nests placed in trees. Egg survival rates over 15 days were approximately 80% following rodent control and 20-40% before control. Survival of artificial nests in trees was not significantly different from genuine ‘elapaio nests. Control was through trapping and poisoning (with diphacinone).


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