Western Bonelli's Warbler
Phylloscopus bonelli (Vieillot, 1819)
IW
BONWA
13071
Family: Passeriformes > Phylloscopidae
Recently separated as a species from the eastern form, this is a rare visitor to Britain & Ireland from upland woodlands in southern Europe.
Records tend to come from the autumn period, which is unusual for a migrant species breeding at the western end of the Mediterranean.
Bonelli's Warbler was the first bird for which DNA data contributed to a split into two species.
Select a topic for more facts and statistics about the Western Bonelli's Warbler
BTO RECORDS
BTO RECORDS
Identification
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Browse training coursesStatus and Trends
Population size and trends and patterns of distribution based on BTO surveys and atlases with data collected by BTO volunteers.
CONSERVATION STATUS
This species can be found on the following statutory and conservation listings and schedules.
| Species of European Conservation Concern | Least Concern |
| IUCN Red List of Threatened Species (global) |
Least Concern 
|
| Schedule 1 license required (to disturb) | No |
| Birds Directive Annex 1 | No |
POPULATION SIZE
We have no population estimates for this scarce species.
| BOU Category | A |
|
First Record
|
Skokholm, 1948 |
DISTRIBUTION
This species is a rare vagrant and was recorded during Bird Atlas 2007–11 as shown on the map.
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Britain and Ireland Breeding Distribution 2008-2011.
More from the Atlas Mapstore. -
Britain and Ireland Winter Distribution 2008-2011.
More from the Atlas Mapstore.
Occupied 10-km squares in UK
| No. occupied in breeding season | 1 |
| % occupied in breeding season | 0.03 |
| No. occupied in winter | 1 |
| % occupied in winter | 0.03 |
European Distribution Map
DISTRIBUTION CHANGE
This vagrant is too rarely reported to map distribution change.
Movement
Information about movement and migration based on online bird portals (e.g. BirdTrack), Ringing schemes and tracking studies.
RINGING RECOVERIES
View a summary of recoveries in the Online Ringing Report.
Biology
Lifecycle and body size information about Western Bonelli's Warbler, including statistics on nesting, eggs and lifespan based on BTO ringing and nest recording data.
PRODUCTIVITY & NESTING
Sample sizes are too small to report Productivity and Nesting statistics for this species.
BIOMETRICS
Sample sizes are too small to report Biometrics for this species.
Feather measurements and photos on featherbase
CODES & CLASSIFICATION
|
Field Codes
|
2-letter: IW | 5-letter code: BONWA | Euring: 13071 |
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