Data Zone
Taxonomic note
Phylloscopus bonelli and P. orientalis (del Hoyo and Collar 2016) were previously lumped as P. bonelli following Cramp et al. (1977-1994), Dowsett & Forbes-Watson (1993) and Sibley & Monroe (1990, 1993).
Taxonomic source(s)
AERC TAC. 2003. AERC TAC Checklist of bird taxa occurring in Western Palearctic region, 15th Draft. Available at: http://www.aerc.eu/DOCS/Bird_taxa_of_the_WP15.xls.
del Hoyo, J., Collar, N.J., Christie, D.A., Elliott, A., Fishpool, L.D.C., Boesman, P. and Kirwan, G.M. 2016. HBW and BirdLife International Illustrated Checklist of the Birds of the World. Volume 2: Passerines. Lynx Edicions and BirdLife International, Barcelona, Spain and Cambridge, UK.
| Critically Endangered | Endangered | Vulnerable |
|---|---|---|
| - | - | - |
| Year | Category | Criteria |
|---|---|---|
| 2024 | Least Concern | |
| 2016 | Least Concern | |
| 2012 | Not Recognised | |
| 2008 | Not Recognised | |
| 2005 | Not Recognised | |
| 2004 | Least Concern | |
| 2000 | Not Recognised | |
| 1994 | Not Recognised | |
| 1988 | Not Recognised |
| Migratory status | full migrant | Forest dependency | low |
| Land-mass type | Average mass | - |
| Estimate | Data quality | |
|---|---|---|
| Extent of Occurrence (breeding/resident) | 3,380,000 km2 | |
| Extent of Occurrence (non-breeding) | 4,100,000 km2 | |
| Severely fragmented? | no | - |
| Estimate | Data quality | Derivation | Year of estimate | |
|---|---|---|---|---|
| Population size | 6400000-8480000 mature individuals | medium | estimated | 2018 |
| Population trend | increasing | - | suspected | - |
| Generation length | 2.02 years | - | - | - |
Population justification: In Europe, the total population size is estimated at 4,800,000-6,360,000 mature individuals, with 2,400,000-3,180,000 breeding pairs (BirdLife International 2021), and comprises approximately 75% of the species' global range, so a very preliminary estimate of the global population size is between 6,400,000-8,480,000 mature individuals, although further validation of this estimate is desirable. The species' population in Europe is considered to have undergone a rapid increase over three generations (10 years) (BirdLife International 2021). As this region holds the vast majority of the species' global range, the global population size is considered to be increasing over three generations.
Trend justification: .
| Country/Territory | Presence | Origin | Resident | Breeding visitor | Non-breeding visitor | Passage migrant |
|---|---|---|---|---|---|---|
| Algeria | extant | native | yes | |||
| Andorra | extant | native | yes | |||
| Austria | extant | native | yes | |||
| Belgium | extant | native | yes | |||
| Benin | extant | native | yes | |||
| Burkina Faso | extant | native | yes | |||
| Cameroon | extant | native | yes | |||
| Chad | extant | native | yes | |||
| Côte d'Ivoire | extant | native | yes | |||
| Czechia | extant | native | yes | |||
| Denmark | extant | vagrant | ||||
| Finland | extant | vagrant | ||||
| France | extant | native | yes | |||
| Gabon | extant | vagrant | ||||
| Gambia | extant | native | yes | |||
| Germany | extant | native | yes | |||
| Ghana | extant | native | yes | |||
| Gibraltar (to UK) | extant | native | yes | |||
| Guinea | extant | native | yes | |||
| Guinea-Bissau | extant | native | yes | |||
| Hungary | extant | vagrant | ||||
| Ireland | extant | vagrant | ||||
| Italy | extant | native | yes | yes | ||
| Latvia | extant | vagrant | ||||
| Libya | extant | native | yes | |||
| Liechtenstein | extant | native | yes | |||
| Mali | extant | native | yes | |||
| Malta | extant | native | yes | |||
| Mauritania | extant | native | yes | |||
| Morocco | extant | native | yes | |||
| Netherlands | extant | native | yes | |||
| Niger | extant | native | yes | |||
| Nigeria | extant | native | yes | |||
| Norway | extant | vagrant | ||||
| Poland | extant | native | yes | |||
| Portugal | extant | native | yes | |||
| Senegal | extant | native | yes | |||
| Slovakia | extant | vagrant | ||||
| Slovenia | extant | native | yes | |||
| Spain | extant | native | yes | |||
| Sweden | extant | vagrant | ||||
| Switzerland | extant | native | yes | |||
| Togo | extant | native | yes | |||
| Tunisia | extant | native | yes | |||
| United Kingdom | extant | vagrant | ||||
| Western Sahara | extant | native | yes |
| Country/Territory | IBA Name |
|---|---|
| Austria | Karwendel |
| Austria | Tyrolian Lech valley |
| Germany | Ammergau mountains |
| Germany | Karwendel and Karwendel foothills |
| Habitat (level 1) | Habitat (level 2) | Importance | Occurrence |
|---|---|---|---|
| Forest | Subtropical/Tropical Dry | suitable | non-breeding |
| Forest | Temperate | suitable | breeding |
| Grassland | Subtropical/Tropical Dry | suitable | non-breeding |
| Savanna | Dry | suitable | non-breeding |
| Shrubland | Mediterranean-type Shrubby Vegetation | suitable | breeding |
| Shrubland | Subtropical/Tropical Dry | suitable | non-breeding |
| Wetlands (inland) | Freshwater Springs and Oases | suitable | non-breeding |
| Altitude | 0 - 2000 m | Occasional altitudinal limits |
| Threat (level 1) | Threat (level 2) | Impact and Stresses | |||||||
|---|---|---|---|---|---|---|---|---|---|
| Biological resource use | Logging & wood harvesting - Unintentional effects: (large scale) [harvest] | Timing | Scope | Severity | Impact | ||||
| Ongoing | Minority (<50%) | Unknown | Unknown | ||||||
|
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Recommended citation
BirdLife International (2024) Species factsheet: Western Bonelli's Warbler Phylloscopus bonelli. Downloaded from
https://datazone.birdlife.org/species/factsheet/western-bonellis-warbler-phylloscopus-bonelli on 22/12/2024.
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 22/12/2024.