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Green Hylia Hylia prasina

IUCN Red List history

Year Category
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 Medium
Land mass type   Average mass -

Distribution

  Estimate Data quality
Extent of Occurrence breeding/resident (km2) 4,210,000 medium
Number of locations -
Fragmentation -

Population & trend

  Estimate Data quality Derivation Year of estimate
No. of mature individuals Unknown not applicable Not Applicable 0
Population trend Stable -
Number of subpopulations - - -
Largest subpopulation - - -
Generation length (yrs) 3.6 - - -
Population justification: The global population size has not been quantified, but the species is described as common to very common in most of its range and common to abundant in Liberia (del Hoyo et al. 2006).
Trend justification: The population is suspected to be stable in the absence of evidence for any declines or substantial threats.

Country/Territory distribution

Country/Territory Occurrence status Presence Breeding Non-breeding Passage Resident
Angola Native Extant       Yes
Benin Native Extant       Yes
Cameroon Native Extant       Yes
Central African Republic Native Extant       Yes
Congo Native Extant       Yes
Congo, The Democratic Republic of the Native Extant       Yes
Côte d'Ivoire Native Extant       Yes
Equatorial Guinea Native Extant       Yes
Gabon Native Extant       Yes
Gambia Native Extant       Yes
Ghana Native Extant       Yes
Guinea Native Extant       Yes
Guinea-Bissau Native Extant       Yes
Kenya Native Extant       Yes
Liberia Native Extant       Yes
Mali Native Extant       Yes
Nigeria Native Extant       Yes
Senegal Native Extant       Yes
Sierra Leone Native Extant       Yes
South Sudan Native Extant       Yes
Sudan Native Extant       Yes
Tanzania Native Extant       Yes
Togo Native Extant       Yes
Uganda Native Extant       Yes

Important Bird Areas where this species has triggered the IBA criteria

Country/Territory IBA Name IBA link
Angola Camabatela site factsheet
Angola Gabela site factsheet
Angola Luachimo River (Chitato) site factsheet
Angola Maiombe site factsheet
Benin Lama Forest site factsheet
Cameroon Bakossi mountains site factsheet
Cameroon Bali-Ngemba Forest Reserve site factsheet
Cameroon Banyang Mbo Wildlife Sanctuary site factsheet
Cameroon Boumba - Bek site factsheet
Cameroon Campo Ma'an complex site factsheet
Cameroon Dja Faunal Reserve site factsheet
Cameroon Korup National Park site factsheet
Cameroon Lobéké National Park site factsheet
Cameroon Mbam Djerem National Park site factsheet
Cameroon Mbam Minkom - Kala site factsheet
Cameroon Mont Manengouba site factsheet
Cameroon Mont Nlonako site factsheet
Cameroon Mount Cameroon and Mokoko-Onge site factsheet
Cameroon Mount Kupe site factsheet
Cameroon Mount Rata and Rumpi Hills Forest Reserve site factsheet
Cameroon Nki site factsheet
Cameroon Santchou Faunal Reserve site factsheet
Cameroon Yabassi site factsheet
Central African Republic Bangui site factsheet
Central African Republic Dzanga-Ndoki National Park site factsheet
Central African Republic Ngotto site factsheet
Central African Republic Zémongo Faunal Reserve site factsheet
Congo Conkouati National Park site factsheet
Congo Dimonika Biosphere Reserve site factsheet
Congo Lake Télé Community Reserve site factsheet
Congo Léfini Faunal Reserve site factsheet
Congo Lower Kouilou basin site factsheet
Congo Nouabalé-Ndoki National Park complex site factsheet
Congo Odzala National Park complex site factsheet
Congo, The Democratic Republic of the Bombo-Lumene Game Reserve site factsheet
Congo, The Democratic Republic of the Forests west of Lake Edward site factsheet
Congo, The Democratic Republic of the Itombwe Mountains site factsheet
Congo, The Democratic Republic of the Kahuzi-Biega National Park site factsheet
Congo, The Democratic Republic of the Lomako - Yekokora site factsheet
Congo, The Democratic Republic of the Luki Forest Reserve site factsheet
Congo, The Democratic Republic of the Maiko National Park site factsheet
Congo, The Democratic Republic of the Mount Hoyo Reserve site factsheet
Congo, The Democratic Republic of the Ngiri site factsheet
Congo, The Democratic Republic of the Okapi Faunal Reserve site factsheet
Congo, The Democratic Republic of the Salonga National Park site factsheet
Congo, The Democratic Republic of the Virunga National Park site factsheet
Côte d'Ivoire Azagny National Park site factsheet
Côte d'Ivoire Bossematie Forest Reserve site factsheet
Côte d'Ivoire Comoe National Park site factsheet
Côte d'Ivoire Gueoule and Glo Mountain Forest Reserves site factsheet
Côte d'Ivoire Lamto Ecological Research Station site factsheet
Côte d'Ivoire Mabi Forest reserve site factsheet
Côte d'Ivoire Marahoue National Park site factsheet
Côte d'Ivoire Mopri Forest Reserve site factsheet
Côte d'Ivoire Mount Nimba Strict Nature Reserve site factsheet
Côte d'Ivoire Peko Mountain National Park site factsheet
Côte d'Ivoire Sangbe Mountain National Park site factsheet
Côte d'Ivoire Tai National Park and Nzo Faunal Reserve site factsheet
Côte d'Ivoire Yapo and Mambo Forest Reserves site factsheet
Equatorial Guinea Monte Alen National Park site factsheet
Equatorial Guinea Nsork Highlands National Park site factsheet
Gabon Akanda site factsheet
Gabon Gamba Protected Areas Complex site factsheet
Gabon Ipassa Strict Nature Reserve site factsheet
Gabon Léconi grasslands site factsheet
Gabon Lopé Faunal Reserve site factsheet
Gabon Minkébé Forest Reserve site factsheet
Gabon Ogooué delta and Mandji island site factsheet
Gambia Abuko Nature Reserve site factsheet
Gambia Pirang Forest Park site factsheet
Ghana Ankasa Resource Reserve - Nini-Sushien National Park site factsheet
Ghana Atewa Range Forest Reserve site factsheet
Ghana Bia National Park and Resource Reserve site factsheet
Ghana Boin River Forest Reserve site factsheet
Ghana Boin Tano Forest Reserve site factsheet
Ghana Bosomtwe Range Forest Reserve site factsheet
Ghana Bura River Forest Reserve site factsheet
Ghana Cape Three Points Forest Reserve site factsheet
Ghana Dadieso Forest Reserve site factsheet
Ghana Digya National Park site factsheet
Ghana Draw River Forest Reserve site factsheet
Ghana Ebi River Shelterbelt Forest Reserve site factsheet
Ghana Fure River Forest Reserve site factsheet
Ghana Jema-Asemkrom Forest Reserve site factsheet
Ghana Kakum National Park - Assin Attandaso Resource Reserve site factsheet
Ghana Kalakpa Resource Reserve site factsheet
Ghana Kyabobo (proposed) National Park site factsheet
Ghana Mamiri Forest Reserve site factsheet
Ghana Mount Afadjato - Agumatsa Range forest site factsheet
Ghana Muni-Pomadze Ramsar Site site factsheet
Ghana Nsuensa Forest Reserve site factsheet
Ghana Pra-Sushien Forest Reserve site factsheet
Ghana Subri River Forest Reserve site factsheet
Ghana Tano-Anwia Forest Reserve site factsheet
Ghana Tano-Ehuro Forest Reserve site factsheet
Ghana Tano-Nimiri Forest Reserve site factsheet
Ghana Tano-Offin Forest Reserve site factsheet
Ghana Yoyo River Forest Reserve site factsheet
Guinea Diécké site factsheet
Guinea Gangan Foret Classe site factsheet
Guinea Kabitaï site factsheet
Guinea Kounounkan site factsheet
Guinea Massif du Ziama site factsheet
Guinea Monts Nimba (part of Mount Nimba transboundary AZE) site factsheet
Guinea-Bissau Dulombi site factsheet
Guinea-Bissau Lagoas de Cufada site factsheet
Kenya Kakamega forest site factsheet
Kenya Mount Elgon (Kenya) site factsheet
Kenya North Nandi forest site factsheet
Kenya South Nandi forest site factsheet
Liberia Cape Mount site factsheet
Liberia Cestos - Senkwen site factsheet
Liberia Grebo site factsheet
Liberia Nimba mountains site factsheet
Liberia Sapo site factsheet
Liberia Wologizi mountains site factsheet
Liberia Wonegizi mountains site factsheet
Liberia Zwedru site factsheet
Nigeria Afi River Forest Reserve site factsheet
Nigeria Akassa forests site factsheet
Nigeria Biseni forests site factsheet
Nigeria Cross River National Park: Oban Division site factsheet
Nigeria Cross River National Park: Okwangwo Division site factsheet
Nigeria Donga river basin forests site factsheet
Nigeria Ebok-Kabaken site factsheet
Nigeria Gashaka-Gumti National Park site factsheet
Nigeria IITA Forest Reserve, Ibadan site factsheet
Nigeria Okomu National Park site factsheet
Nigeria Omo Forest Reserve site factsheet
Nigeria Upper Orashi forests site factsheet
Senegal Parc National de Basse Casamance site factsheet
Sierra Leone Gola Forest Reserve site factsheet
Sierra Leone Kambui Hills Forest Reserve site factsheet
Sierra Leone Loma Mountains Non-hunting Forest Reserve site factsheet
Sierra Leone Tingi Hills Non-hunting Forest Reserve site factsheet
Sierra Leone Western Area Peninsula Non-hunting Forest Reserve site factsheet
South Sudan Bengangai site factsheet
South Sudan Imatong mountains site factsheet
Tanzania Minziro Forest Reserve site factsheet
Togo Misahöhe Forest Reserve site factsheet
Uganda Budongo Forest Reserve site factsheet
Uganda Bugoma Central Forest Reserve site factsheet
Uganda Bwindi Impenetrable National Park site factsheet
Uganda Kasyoha-Kitomi Forest Reserve site factsheet
Uganda Kibale National Park site factsheet
Uganda Mabira Forest Reserve site factsheet
Uganda Mount Elgon National Park site factsheet
Uganda Queen Elizabeth National Park and Lake George site factsheet
Uganda Sango Bay area site factsheet
Uganda Semliki National Park site factsheet
Uganda Semliki reserves site factsheet

Habitats & altitude

Habitat (level 1) Habitat (level 2) Importance Occurrence
Artificial/Terrestrial Plantations suitable resident
Artificial/Terrestrial Subtropical/Tropical Heavily Degraded Former Forest suitable resident
Forest Subtropical/Tropical Moist Lowland major resident
Forest Subtropical/Tropical Moist Montane major resident
Forest Subtropical/Tropical Swamp suitable resident
Savanna Dry suitable resident
Shrubland Subtropical/Tropical Moist suitable resident
Altitude 0 - 0 m Occasional altitudinal limits  

Recommended citation
BirdLife International (2014) Species factsheet: Hylia prasina. Downloaded from http://www.birdlife.org on 28/12/2014. Recommended citation for factsheets for more than one species: BirdLife International (2014) IUCN Red List for birds. Downloaded from http://www.birdlife.org on 28/12/2014.

This information is based upon, and updates, the information published in BirdLife International (2000) Threatened birds of the world. Barcelona and Cambridge, UK: Lynx Edicions and BirdLife International, BirdLife International (2004) Threatened birds of the world 2004 CD-ROM and BirdLife International (2008) Threatened birds of the world 2008 CD-ROM. These sources provide the information for species accounts for the birds on the IUCN Red List.

To provide new information to update this factsheet or to correct any errors, please email BirdLife

To contribute to discussions on the evaluation of the IUCN Red List status of Globally Threatened Birds, please visit BirdLife's Globally Threatened Bird Forums.

Key facts
Current IUCN Red List category Least Concern
Family Sylviidae (Old World warblers)
Species name author (Cassin, 1855)
Population size Unknown mature individuals
Population trend Stable
Distribution size (breeding/resident) 4,210,000 km2
Country endemic? No
Links to further information
- Summary information on this species
- Projected distributions under climate change