Data Zone
Aldiansyah, S., Risna, Saputra, R.A. 2024. Assessing Potential Distributions of Bird Endemic Species: Case Studies of Macrocephalon maleo and Rhyticeros cassidixand Their Threats. Geomatics and Environmental Engineering 18(3): 45-61.
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. DOI: 10.1111/cobi.13486.
Cahill, A.J. 2003. Nest-site characteristics of the Red-knobbed Hornbill Aceros cassidix and Sulawesi Dwarf Hornbill Penelopides exarhatus. Ibis 145(3): E97-E113.
Cahill, A.J., and Walker, J.S. 2000. The effects of forest fire on the nesting success of the Red-knobbed Hornbill Aceros cassidix. Bird Conservation International 10(2): 109-114.
Eaton, J.A., van Balen, B., Brickle, N.W. and Rheindt, F.E. 2021. Birds of the Indonesian Archipelago: Greater Sundas and Wallacea. Second Edition. Lynx Edicions, Barcelona, Spain.
ESA. 2022. ESA-CCI land cover maps of 1992-2020. Available at: https://www.esa-landcover-cci.org/.
FWI/GFW (Forest Watch Indonesia/Global Forest Watch). 2002. The State of the Forest: Indonesia. Bogor/Washington Available at: http://www.wri.org/sites/default/files/pdf/indoforest_full.pdf.
Global Forest Watch. 2024. Interactive Forest Change Mapping Tool. Available at: http://www.globalforestwatch.org/.
Hansen, M., Potapov, P., Moore, R., Hancher, M., Turubanova, S., Tyukavina, A., Thau, D., Stehman, S., Goetz, S., Loveland, T., Kommareddy, A., Egorov, A., Chini, L., Justice, C and Townshend, J. 2013. High-resolution global maps of 21st-century forest cover change. Science 342: 850–853.
IUCN. 2024. The IUCN Red List of Threatened Species. Version 2024-2. Available at: https://www.iucnredlist.org. (Accessed: 22 October 2024).
Kemp, A.C., and Boesman, P.F.D. 2020. Knobbed Hornbill (Rhyticeros cassidix), version 1.0. Ithaca, NY. Cornell Lab of Ornithology. Available at: https://doi.org/10.2173/bow.knohor1.01.
Kinnaird, M. F. & O'Brien, T. G. 2007. The ecology and conservation of Asian Hornbills: farmers of the forest. University of Chicago Press, Chicago, IL, USA.
Kinnaird, M. F., Obrien, T. G., and Suryadi, S. 1996. Population fluctuation in Sulawesi Red-knobbed Hornbills: tracking figs in space and time. The Auk 113: 431-440.
Kinnaird, M. F.; O'Brien, T. G. 1999. Breeding ecology of the Sulawesi Red-knobbed Hornbill, Aceros cassidix. Ibis 141: 60-69.
Marsden S.J. 1988. Changes in bird abundance following selective logging on Seram, Indonesia. Conservation Biology 12: 605-611.
Martin, T.E., Blackburn, G.A. 2010. Impacts of Tropical Forest Disturbance Upon Avifauna on a Small Island with High Endemism: Implications for Conservation. Conservation and Society 8(2): 127-139.
O'Brien, T.G., and Kinnaird, M.F. 1996. Changing populations of birds and mammals in North Sulawesi. Oryx 30(2): 150-156.
Prawiradilaga D.M. 2020. Diversity and threats to endemic birds in the Wallacean region, Indonesia. IOP Conference Series: Earth and Environmental Science 473: 012064.
Protected Planet. 2024. Protected Planet: The World Database on Protected Areas (WDPA). Cambridge, UK. IUCN and UNEP-WCMC. Available at: www.protectedplanet.net. (Accessed: 2024).
sRedList. 2024. sRedList Platform - a tool to support Red List assessments (Version 1.1). LifeWatch ERIC. Available at: https://doi.org/10.48372/DSKB-JE13.
Suryadi, S., Kinnaird, M.F., O'Brien, T.G.O., Supriatna, J., and Somadikarta, S. 1994. Food Preferences of the Sulawesi Red-Knobbed Hornbill During the Non-breeding Season. Tropical Biodiversity 2(3): 377.
Voigt, M., Supriatna, J., Deere, N.J., Kastanya, A., Mitchell, S.L., D Rosa, I.M., Santika, T., Siregar, R., Tasirin, J.S., Widyanto, A., Winarni, N.L., Zakaria, Z., Mumbunan, S., Davies, Z.G. and Struebig, M.J. 2021. Emerging threats from deforestation and forest fragmentation in the Wallacea centre of endemism. Environmental Research Letters 16(9): 094048.
Walker, J.S. 2007. Dietary specialization and fruit availability among frugivorous birds on Sulawesi. Ibis 149(2): 345-356.
Whitten, A.J., Mustafa, M. and Henderson, G.S. 2002. The Ecology of Sulawesi. Gadjah Mada University Press, Yogyakarta, Indonesia.
Winarni, N.L., and Jones, M. 2012. Effect of anthropogenic disturbance on the abundance and habitat occupancy of two endemic hornbill species in Buton island, Sulawesi. Bird Conservation International 22: 222-233.
IUCN SSC Hornbill Specialist Group
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Recommended citation
BirdLife International (2024) Species factsheet: Knobbed Hornbill Rhyticeros cassidix. Downloaded from
https://datazone.birdlife.org/species/factsheet/knobbed-hornbill-rhyticeros-cassidix on 23/12/2024.
Recommended citation for factsheets for more than one species: BirdLife International (2024) IUCN Red List for birds. Downloaded from
https://datazone.birdlife.org/species/search on 23/12/2024.