Birds of the World

Bridled White-eye Zosterops conspicillatus Scientific name definitions

Robert J. Craig and Peter Pyle
Version: 3.0 — Published April 11, 2025

Priorities for Future Research

Introduction

  1. The highest priority is continued monitoring and implementation of interdiction efforts at ports to prevent the establishment of brown tree snake populations on other Mariana islands.
  2. As the highest densities of the Bridled White-eye are attained in native limestone forest, a second priority is the preservation of this habitat by setting it aside from any encroachment by agriculture, residential, or commercial development. In addition, much of secondary forest that is presently dominated by alien species, particularly that adjacent to seed sources in native forest, have the potential to be revegetated by native forest species (93). Native birds and Mariana fruit bats (Pteropus mariannus) are major dispersers of native seeds (94), so further research into facilitating conversion of alien forest into that dominated by native species is needed.
  3. High feral goat densities on Aguiguan are interfering with reproduction of native trees in the forest, and goat reduction efforts yield improvement in native seedling development (95). Hence, ongoing management of feral goats on Aguiguan is required to maintain high densities of the Bridled White-eye and other native bird species.
  4. Translocation efforts should be expanded to additional Mariana islands. The Mariana Islands of Alamagan, Pagan, Agrihan, and Asuncion, all of which have apparently suitable areas of forest habitat, are also candidates for translocation of the Bridled White-eye. Pagan is presently under consideration for translocation. However, Agrihan and Asuncion are presently slated for Tinian Monarch and Rota White-eye translocation, so there are no plans to translocate the species to these islands (70).

Recommended Citation

Craig, R. J. and P. Pyle (2025). Bridled White-eye (Zosterops conspicillatus), version 3.0. In Birds of the World (B. K. Keeney and S. M. Billerman, Editors). Cornell Lab of Ornithology, Ithaca, NY, USA. https://doi.org/10.2173/bow.brweye1.03
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