Apo Sunbird Aethopyga boltoni


Bird, J.P., Martin, R., Akçakaya, H.R., Gilroy, J., Burfield, I.J., Garnett, S.G., Symes, A., Taylor, J., Şekercioğlu, Ç.H. and Butchart, S.H.M. 2020. Generation lengths of the world’s birds and their implications for extinction risk. Conservation Biology 34(5): 1252-1261.

Cheke, R. A.; Mann, C. F.; Allen, R. 2001. Sunbirds: a guide to the sunbirds, flowerpeckers, spiderhunters and sugarbirds of the world. Christopher Helm, London.

Cheke, R., and Mann, C. 2020. Apo Sunbird (Aethopyga boltoni), version 1.0. In: S. M. Billerman, B. K. Keeney, P. G. Rodewald, and T. S. Schulenberg (eds), Birds of the World, Cornell Lab of Ornithology, Ithaca, NY, USA.

Global Forest Watch. 2020. Interactive Forest Change Mapping Tool. Available at:

IUCN. 2020. The IUCN Red List of Threatened Species. Version 2020-3. Available at: (Accessed: 10 December 2020).

Mohagan, A.B.; Nuñeza, O.M.; Gracia, Jr. A.G.; Selpa, E.C.T.; Escarlos Jr. J.A.; Baguhin, L.J.B.; Coritico, F.P.; Amoroso, V.B. 2015. Species Richness of Avifauna in Four Long Term Ecological Research Sites in Mindanao, Philippines. Journal of Applied Environmental and Biological Sciences 5(11): 88-99.

Nuñeza, O.M.; Ates, F.B.; Alicante, A.A.; Calizo-Enguito, M.R.; Toledo-Bruno, A.G.; Labajo, Y.I.; and Dejarme, S.M. 2006. Vertebrate faunal diversity and relevant interrelationships of critical resources in Mt. Malindang. SEAMEO-SEARCA: 37-65.

Paz, S. L., Ngoprasert, D., Nuneza, O. M., Mallari, N. A. D., Gale. G. A. 2013. Philippine-endemic and Mindanao-endemic Bird Communities on Canticol and Mt. Hilong-hilong, Philippines. Asian Journal of Biodiversity 4: 135-168.

Santini, L., Isaac, N. J. B., Maiorano, L., Ficetola, G. F., Huijbregts, M. A. J., Carbone, C., and Thuiller, W. 2018. Global drivers of population density in terrestrial vertebrates. Global Ecology and Biogeography 27(8): 968-979.

Tracewski, L.; Butchart, S.H.M.; Di Marco, M.; Ficetola, G.F.; Rondinini, C.; Symes, A.; Wheatley, H.; Beresford, A.E. and Buchanan, G.M. 2016. Toward quantification of the impact of 21st-century deforestation on the extinction risk of terrestrial vertebrates. Conservation Biology 30(5): 1070-1079.

Further resources

Detailed species accounts from the Threatened birds of Asia: the BirdLife International Red Data Book (BirdLife International 2001).

Search for photos and videos, and hear sounds of this species from the Macaulay Library

View photos and videos and hear sounds of this species from the Internet Bird Collection

Recommended citation
BirdLife International (2024) Species factsheet: Aethopyga boltoni. Downloaded from on 21/02/2024.
Recommended citation for factsheets for more than one species: BirdLife International (2024) IUCN Red List for birds. Downloaded from on 21/02/2024.