LC
Von der Decken's Hornbill Tockus deckeni



Taxonomy

Taxonomic source(s)
del Hoyo, J., Collar, N.J., Christie, D.A., Elliott, A. and Fishpool, L.D.C. 2014. HBW and BirdLife International Illustrated Checklist of the Birds of the World. Lynx Edicions BirdLife International, Barcelona, Spain and Cambridge, UK.
del Hoyo, J.; Collar, N. J.; Christie, D. A.; Elliott, A.; Fishpool, L. D. C. 2014. HBW and BirdLife International Illustrated Checklist of the Birds of the World. Barcelona, Spain and Cambridge UK: Lynx Edicions and BirdLife International.

IUCN Red list criteria met and history
Red List criteria met
Critically Endangered Endangered Vulnerable
- - -

Red List history
Year Category Criteria
2016 Least Concern
2012 Least Concern
2009 Least Concern
2008 Least Concern
2004 Least Concern
2000 Lower Risk/Least Concern
1994 Lower Risk/Least Concern
1988 Lower Risk/Least Concern
Species attributes

Migratory status not a migrant Forest dependency Low
Land mass type Average mass -
Extent of occurrence (EOO)

Estimate Data quality
Extent of Occurrence breeding/resident (km2) 2,380,000 medium
Number of locations -
Fragmentation -
Population and trend
Estimate Data quality Derivation Year of estimate
No. of mature individuals unknown not applicable not applicable 0
Population trend Decreasing suspected -
Decline (3 years/1 generation past) - - -
Decline (5 years/1 generation past) - - -
Decline (10 years/1 generation past) - - -
Decline (10 years/3 generation future) - - -
Decline (10 years/3 generation past and future) - - -
Number of subpopulations - - -
Largest subpopulations - - -
Generation length (yrs) 9.8 - - -

Population justification: The global population size has not been quantified, but the species is reported to be widespread and locally common (del Hoyo et al. 2001).

Trend justification: The population is suspected to be in decline owing to destruction of large trees which provide nesting sites (del Hoyo et al. 2001).


Country/territory distribution
Country/Territory Occurrence status Presence Resident Breeding Non-breeding Passage
Ethiopia N Extant Yes
Kenya N Extant Yes
Somalia N Extant Yes
Tanzania N Extant Yes

Important Bird and Biodiversity Areas (IBA)
Country/Territory IBA Name
Ethiopia Yangudi-Rassa National Park
Ethiopia Awash National Park
Ethiopia Babille Elephant Sanctuary
Ethiopia Abijatta - Shalla Lakes National Park
Ethiopia Omo National Park
Ethiopia Nechisar National Park and surroundings
Ethiopia Genale river
Ethiopia Mago National Park
Ethiopia Lower Wabi Shebelle river and Warder
Ethiopia Konso - Segen
Ethiopia Yabello Sanctuary
Ethiopia Arero forest
Ethiopia Dawa - Wachile
Ethiopia Lake Chew Bahir
Kenya Tana River Delta
Kenya Lower Tana River Forests
Kenya Tsavo East National Park
Kenya Tsavo West National Park
Kenya Chyulu Hills forests
Kenya Dida Galgalu desert
Kenya Machakos valleys
Kenya Meru National Park
Kenya Mwea National Reserve
Kenya Samburu and Buffalo Springs National Reserves
Kenya Shaba National Reserve
Kenya Nairobi National Park
Kenya Amboseli National Park
Kenya Lake Magadi
Kenya Masai Mara
Kenya Ol Donyo Sabache
Kenya South Nguruman
Somalia Buulobarde
Somalia War Harqaan - isha Dolondole
Somalia Xawaadley reservoir
Somalia Jowhar - Warshiikh
Somalia Balcad Nature Reserve
Somalia Jasiira lagoon and Muqdisho islets
Somalia Arbowerow
Somalia Boja swamps
Somalia Aangole - Farbiito
Somalia Far Waamo
Somalia Laag Badaana
Tanzania Katavi National Park
Tanzania Lake Manyara
Tanzania Mikumi National Park
Tanzania Ruaha National Park
Tanzania Serengeti National Park
Tanzania Tarangire National Park
Tanzania Udzungwa National Park
Tanzania Ngorongoro Conservation Area
Tanzania Maswa Game Reserve
Tanzania Mkomazi Game Reserve
Tanzania Lake Eyasi
Tanzania Nyumba ya Mungu reservoir
Tanzania Lake Natron and Engaruka basin
Tanzania Usangu flats
Tanzania Wembere steppe
Tanzania Longido Game Controlled Area
Tanzania Udzungwa Mountain Range
Ethiopia Eastern Hararghe (Harar-Wabi Shebelle)
Kenya Lolldaiga-Mugogodo-Ewaso N'yiro
Kenya Mumoni Hill Forest Reserve
Tanzania Lake Balangida Lelu

Habitats & altitude
Habitat (level 1) Habitat (level 2) Importance Occurrence
Forest Subtropical/Tropical Dry suitable resident
Savanna Dry major resident
Shrubland Subtropical/Tropical Dry major resident
Altitude   Occasional altitudinal limits  

Recommended citation
BirdLife International (2020) Species factsheet: Tockus deckeni. Downloaded from http://www.birdlife.org on 16/07/2020. Recommended citation for factsheets for more than one species: BirdLife International (2020) IUCN Red List for birds. Downloaded from http://www.birdlife.org on 16/07/2020.