New sighting and conservation implications of the endemic Sulu Boobook Ninox reyi Oustalet, 1880 at Bolobok Rock Shelter, a key archaeological site in the Sulu Archipelago, southern Philippines

Authors

  • Fauriza J. Saddari Mindanao State University Tawi-Tawi College of Technology and Oceanography, Bongao, Tawi Tawi 7500, Philippines.
  • Yennyriza T. Abduraup Mindanao State University Tawi-Tawi College of Technology and Oceanography, Bongao, Tawi Tawi 7500, Philippines.
  • Adzmer A. Juaini Mindanao State University Tawi-Tawi College of Technology and Oceanography, Bongao, Tawi Tawi 7500, Philippines.
  • Roger A. Irilis Mindanao State University Tawi-Tawi College of Technology and Oceanography, Bongao, Tawi Tawi 7500, Philippines.
  • Khalid D. Adam Mindanao State University Tawi-Tawi College of Technology and Oceanography, Bongao, Tawi Tawi 7500, Philippines.
  • Mary Joyce Z. Guinto-Sali Mindanao State University Tawi-Tawi College of Technology and Oceanography, Bongao, Tawi Tawi 7500, Philippines.
  • Richard N. Muallil Mindanao State University Tawi-Tawi College of Technology and Oceanography, Bongao, Tawi Tawi 7500, Philippines.

DOI:

https://doi.org/10.11609/jott.9052.17.3.26753-26756

Keywords:

Conservation, Hawk-owl, ornithology, Sulu archipelago

Abstract

 We report a new sighting of the vulnerable and endemic Sulu Boobook Ninox reyi at Bolobok Rock Shelter, Tawi-Tawi, Philippines, on 10 July 2023. This observation expands the species’ known range and suggests possible adaptation to limestone karst habitats, indicating a broader ecological niche than previously documented. Further surveys are necessary to establish the species’ long-term presence, reproductive activity, and population status in the area. Given Bolobok Rock Shelter’s dual significance as both a cultural heritage site and a potential critical habitat for Ninox reyi, we emphasize the need for continued monitoring & conservation efforts to safeguard both the species and its environment.
Keywords:

Author Biographies

Fauriza J. Saddari, Mindanao State University Tawi-Tawi College of Technology and Oceanography, Bongao, Tawi Tawi 7500, Philippines.

.

Yennyriza T. Abduraup, Mindanao State University Tawi-Tawi College of Technology and Oceanography, Bongao, Tawi Tawi 7500, Philippines.

.

Adzmer A. Juaini, Mindanao State University Tawi-Tawi College of Technology and Oceanography, Bongao, Tawi Tawi 7500, Philippines.

.

Roger A. Irilis, Mindanao State University Tawi-Tawi College of Technology and Oceanography, Bongao, Tawi Tawi 7500, Philippines.

.

Khalid D. Adam, Mindanao State University Tawi-Tawi College of Technology and Oceanography, Bongao, Tawi Tawi 7500, Philippines.

.

Mary Joyce Z. Guinto-Sali, Mindanao State University Tawi-Tawi College of Technology and Oceanography, Bongao, Tawi Tawi 7500, Philippines.

.

Richard N. Muallil, Mindanao State University Tawi-Tawi College of Technology and Oceanography, Bongao, Tawi Tawi 7500, Philippines.

.

References

Allen, D. (2001). The hawk owls of the Sulu archipelago, Philippines. Asian Raptor Bulletin 2: 22–23.

Bautista, G. (2022). Bolobok Rockshelter. National Museum of the Philippines. Accessed on 16 February 2025. Retrieved from https://www.nationalmuseum.gov.ph/2022/06/28/balobok-rockshelter/

BirdLife International (2016). Species factsheet: Sulu Boobook Ninox reyi. https://datazone.birdlife.org/species/factsheet/sulu-boobook-ninox-reyi . Accessed on 6 March 2025

Faylona, M.G.P.G. (2010). The ancient giant clam shells from Balobok Rockshelter, Philippines as potential recorders of environmental changes: A diagenesis assessment and sclerochronology study. Sezione di Museologia Scientifica e Naturalistica 6: 33–42.

Kennedy, R.S., P.C. Gonzalez, E.C. Dickinson, H.C. Miranda Jr. & T.H. Fisher (2000). A Guide to the Birds of the Philippines. Oxford University Press, 392 pp.

Muallil, R.N., A.S. Injani, Y.T. Abduraup, F.J. Saddari, E.R. Ondo, A.J. Sakilan, M.G.N. Hapid & H.A. Allama (2024). Recent record of True Giant Clam Tridacna gigas from the Sulu Archipelago and insight into the giant clam fisheries and conservation in the southernmost islands of the Philippines. Journal of Threatened Taxa 16(3): 25006–25009. https://doi.org/10.11609/jott.8917.16.3.25006-25009

Pradel, R. & A. Sanz-Aguilar (2012). Modeling trap-awareness and related phenomena in capture-recapture studies. PLoS ONE 7(3): e32666. https://doi.org/10.1371/journal.pone.0032666

Rasmussen, P.C., D.N.S. Allen, N.J. Collar, B. DeMeulemeester, R.O. Hutchinson, P.G.C. Jakosalem, R.S. Kennedy, F.R. Lambert & L.M. Paguntalan (2012). Vocal divergence and new species in the Philippine Hawk Owl Ninox philippensis complex. Forktail 28: 1–20.

Rebollo, S., L. Pérez‐Camacho, S. Martínez‐Hesterkamp, L. Tapia, J.M. Fernández‐Pereira & I. Morales‐Castilla (2023). Anything for a quiet life: shelter from mobbers drives reproductive success in a top‐level avian predator. Journal of Avian Biology 2023(3–4): e03060. https://doi.org/10.1111/jav.03060

Sansawi, A.K., R.N. Muallil & K.D. Adam, L.E.P. de Guzman (2020). From logging to farming in Bongao, Tawi-Tawi, pp. 108–122. In: Zamora, O.B., L.E.P. de Guzman & R.V. Tatlonghari (eds.). Stories of Adaptation to Climate Change. Department of Agriculture-Bureau of Agricultural Research (DA-BAR) & University of the Philippines Los Baños-College of Agriculture and Food Science (UPLB-CAFS).

van de Ven, W., R. Muallil & N.D. Realubit (2019). Living on the edge: current status of rare Sulu endemic avifauna. Journal of Environmental Science and Management SP-1 (1–7). https://doi.org/10.47125/jesam/2019_sp1/01

Downloads

Published

26-03-2025

Issue

Section

Notes

Funding data