• Summary
• Text account
• Data table and detailed info
• Distribution map
• Climate Change maps
• Reference and further resources

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. Volume 1: Non-passerines. Lynx Edicions BirdLife International, Barcelona, Spain and Cambridge, UK.

Red List criteria met

Critically Endangered	Endangered	Vulnerable
-	-	-

Red List history

Year	Category	Criteria
2024	Least Concern
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

Migratory status	not a migrant	Forest dependency	low
Land-mass type		Average mass	-

	Estimate	Data quality
Extent of Occurrence (breeding/resident)	2,380,000 km2	medium
Severely fragmented?	no	-

	Estimate	Data quality	Derivation	Year of estimate
Population size	unknown	-	-	-
Population trend	decreasing	-	suspected	-
Generation length	4.07 years	-	-	-

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). The population is suspected to be in decline owing to destruction of large trees which provide nesting sites (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	Presence	Origin	Resident	Breeding visitor	Non-breeding visitor	Passage migrant
Ethiopia	extant	native	yes
Kenya	extant	native	yes
Somalia	extant	native	yes
Tanzania	extant	native	yes

Country/Territory	IBA Name
Ethiopia	Abijatta - Shalla Lakes National Park
Ethiopia	Arero forest
Ethiopia	Awash National Park
Ethiopia	Dawa - Wachile
Ethiopia	Eastern Hararghe (Harar-Wabi Shebelle)
Ethiopia	Genale river
Ethiopia	Konso - Segen
Ethiopia	Lake Chew Bahir
Ethiopia	Lower Wabi Shebelle river and Warder
Ethiopia	Mago National Park
Ethiopia	Nechisar National Park and surroundings
Ethiopia	Omo National Park
Ethiopia	Yabello Sanctuary
Ethiopia	Yangudi-Rassa National Park
Kenya	Amboseli National Park
Kenya	Dida Galgalu desert
Kenya	Meru National Park
Kenya	Samburu and Buffalo Springs National Reserves
Kenya	Shaba National Reserve
Kenya	Tsavo East National Park
Kenya	Tsavo West National Park
Somalia	Aangole - Farbiito
Somalia	Arbowerow
Somalia	Balcad Nature Reserve
Somalia	Boja swamps
Somalia	Buulobarde
Somalia	Far Waamo
Somalia	Jasiira lagoon and Muqdisho islets
Somalia	Jowhar - Warshiikh
Somalia	Laag Badaana
Somalia	War Harqaan - isha Dolondole
Somalia	Xawaadley reservoir
Tanzania	Lake Balangida Lelu
Tanzania	Lake Manyara
Tanzania	Lake Natron and Engaruka basin
Tanzania	Longido Game Controlled Area
Tanzania	Mkomazi National Park
Tanzania	Ngorongoro Conservation Area
Tanzania	Nyumba ya Mungu reservoir
Tanzania	Ruaha National Park
Tanzania	Serengeti National Park
Tanzania	Tarangire National Park
Tanzania	Usangu flats
Tanzania	Wembere steppe

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	0 - 2080 m	Occasional altitudinal limits

Purpose	Scale
Pets/display animals, horticulture	subsistence, national

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Recommended citation
BirdLife International (2024) Species factsheet: Von der Decken's Hornbill Tockus deckeni. Downloaded from https://datazone.birdlife.org/species/factsheet/von-der-deckens-hornbill-tockus-deckeni on 22/11/2024.
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 22/11/2024.