LC
Eastern Yellow-billed Hornbill Tockus flavirostris



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) 2,740,000 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 generally uncommon (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
Djibouti N Extant Yes
Eritrea N Extant Yes
Ethiopia N Extant Yes
Kenya N Extant Yes
Somalia N Extant Yes
South Sudan N Extant Yes
Sudan N Extant
Tanzania N Extant Yes
Uganda N Extant Yes

Important Bird and Biodiversity Areas (IBA)
Country/Territory IBA Name
Djibouti Forêt de Day
Djibouti Mabla
Eritrea Danakil lowlands
Eritrea Ghinda
Eritrea Gulf of Zula
Eritrea Massawa coast
Ethiopia Abijatta - Shalla Lakes National Park
Ethiopia Arero forest
Ethiopia Awash National Park
Ethiopia Dawa - Wachile
Ethiopia Eastern Hararghe (Harar-Wabi Shebelle)
Ethiopia Konso - Segen
Ethiopia Lake Chew Bahir
Ethiopia Lower Wabi Shebelle river and Warder
Ethiopia Mago National Park
Ethiopia Mankubsa - Welenso forest
Ethiopia Omo National Park
Ethiopia Yabello Sanctuary
Ethiopia Yangudi-Rassa National Park
Kenya Amboseli National Park
Kenya Dida Galgalu desert
Kenya Lake Baringo
Kenya Lake Bogoria National Reserve
Kenya Lake Turkana
Kenya Lower Tana River Forests
Kenya Meru National Park
Kenya Ol Donyo Sabache
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 Daalo
Somalia Far Waamo
Somalia Gacan Libaax
Somalia Laag Badaana
Somalia Lascaanod - Taleex - Ceel Chebet
Somalia Saylac
Somalia War Harqaan - isha Dolondole
Somalia Xawaadley reservoir
South Sudan Kidepo
Tanzania Mkomazi Game Reserve
Uganda Kidepo Valley National Park
Uganda Mount Moroto Forest Reserve

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

Recommended citation
BirdLife International (2020) Species factsheet: Tockus flavirostris. Downloaded from http://www.birdlife.org on 21/01/2020. Recommended citation for factsheets for more than one species: BirdLife International (2020) IUCN Red List for birds. Downloaded from http://www.birdlife.org on 21/01/2020.