Manana State Wildlife Sanctuary

Size:                                     67 Acres
Access:                                 Closed
Seabird Species Present:    Uʻau Kani or Wedged-Tailed Shearwater (Puffinus pacificus), Noio or Black Noddy (Anous minutes), Noio kōhā or Brown Noddy (Anous stolidus), ʻOu or Bulwer’s Petrel (Bulweria bulwerii), Koaʻe ʻula or Red-tailed Tropicbird (Phaethon rubricauda), and ʻEwa ʻEwa or Sooty Tern (Sterna fuscata), various common shorebird species.
Threats:                               Golden Crown-beard (Verbesina encelioides), Spiny Achyranthes (Achyranthes aspera), Ageratum (Ageratum conzoides), Spiny Amaranth (Amaranthus spinosus), Slender Amaranth (Amaranthus viridis), Scarlet pimpernel (Anagalis arvensis), Australian saltbush (Atriplex semibaccata), Boerhavia (Boerhavia coccinea), Cenchrus spp., Hairy spurge (Chamaesyce hirta), Prostrate spurge (Chamaesyce prostrate), Swollen fingergrass (Chloris barbata), Pumpkin (Cucurbita pepo), Koa Haole (Leucaena leucocephala), Reichardia picroides, Ivy Gourd (Coccinia grandis), Pualele (Emilia fosbergii), Emoloa (Eragrostis variabilis), Tobacco (Nicotiana tabacum), Huehue Haole (Passiflora suberosa), Plucea spp., Pigweed (Portulaca oleracea), Kiawe (Prosopis pallida), Reichardia (Reichardia picroides), Bristly foxtail (Setaria  verticillata), Tomato (Solanum lycopersicum var. cerasiforme), Sow thistle (Sonchus oleraceus), Zulu giant (Stapelia gigantean), New Zealand spinach (Tetragonia tetragonioides), Coat Buttons (Tridax procumbens), Golden Crown-beard (Verbesina encelioides), Yellow Crazy Ants (Anoplolepis gracilipes), Tropical Fire Ants (Solenopsis geminate), Mice (Mus musculus),   Rats (Rattus rattus), Barn Owls (Tyto alba), various grasses.


Management Goals and Objectives:

  1. Manana Islet has the second largest wedge-tailed shearwater population in the state. Conduct yearly surveys of chick abundance.
  2. Conduct additional seabird surveys and prevent disturbance to seabirds, including prevent destruction of seabird burrows. Survey and remove incipient weeds to enhance seabird nesting areas.
  3. Prevent introduction of invasive species. Control and eradicate Yellow Crazy Ants, Tropical Fire Ants, Mice, and Rats,. Monitor the impacts Ants, Rats, and Barn Owls (Tyto alba) on Wedge-Tailed Shearwaters and Sooty Terns.
  4. Prevent destruction of sensitive vegetation. The soil is sensitive to erosion.
  5. The islet is an important haul out area for both species and breeding area for monk seal. Prevent disturbance to monk seals and turtles.
  6. Protect public safety due to steep loose soil and the potential presence of unexploded ordinance (UXOs).