River Warbler
Locustella fluviatilis (Wolf, 1810)
VW
RIVWA
12370
Family: Passeriformes > Locustellidae
Records of this rare visitor from eastern Europe peak in September, but the occurrence of several singing males in the summer has led some to speculate it may eventually breed here.
The River Warbler's song often mimics the sounds made by local invertebrates (such as cicadas or bush-crickets), sometimes even mimicking different species during the day and night.
Select a topic for more facts and statistics about the River Warbler
BTO RECORDS
BTO RECORDS
Identification
River Warbler identification is sometimes difficult.
SONGS AND CALLS
Listen to example recordings of the main vocalisations of River Warbler, provided by xeno-canto contributors.
Song
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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
|
Fair Isle, 1961 |
DISTRIBUTION
This species is a rare vagrant and was recorded during Bird Atlas 2007–11 as shown on the map.
More from the Atlas Mapstore.
Occupied 10-km squares in UK
| No. occupied in breeding season | 2 |
| % occupied in breeding season | 0.07 |
European Distribution Map
DISTRIBUTION CHANGE
This vagrant is too rarely reported to map distribution change.
SEASONALITY
River Warbler is a very rare vagrant, with records in late spring and autumn.
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 River 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: VW | 5-letter code: RIVWA | Euring: 12370 |
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