Bay-breasted Warbler

Setophaga castanea

Introduction

A colourful American warbler that breeds in the spruce forests of Canada and migrates to central America, an individual found in Cornwall in 1995 was most unexpected

Numbers of Bay-breasted Warblers on their North American breeding grounds fluctuate markedly in response to the abundance of their prey, the Spruce Budworm.

Key Stats

Status

Very rare

Weight

12.5g

Seasonality

Population and distribution stats for:

No data

No current data

No current data

No data

No current data

No current data

Status and Trends

Population size, trends and patterns of distribution based on BTO and partnership surveys and atlasses with data collected by BTO volunteers.

Conservation Status

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This species can be found on the following statutory and conservation listings and schedules.

IUCN Red List of Threatened Species (global)

Least Concern

Schedule 1 Licence required (to disturb)*

Birds Directive Annex 1

* A guide only. Check details with the original legislation, especially those marked with an asterisk. See About Birdfacts for more information.

Population Size

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BOU Category

Source

First Record*

Cornwall, 1995

* First documented occurrence. Most species undoubtedly occurred before this. See About Birdfacts for more information.

Population Change

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Population trends of this scarce species are not routinely monitored.

Distribution

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This vagrant is too rarely reported to map distribution.

Distribution Change

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This vagrant is too rarely reported to map distribution change.

Seasonality

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This species has been too rarely reported to BirdTrack during 2011–22 to properly assess seasonality.

Movement

Information about Bay-breasted Warbler movements and migration based on online bird portals (e.g. BirdTrack), Ringing schemes and tracking studies.

Britain & Ireland movement

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View a summary of recoveries in the Online Ringing Report

European movements

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EuroBirdPortal uses birdwatcher's records, such as those logged in BirdTrack to map the flows of birds as they arrive and depart Europe. See maps for this species here.

Biology

Lifecycle and body size information for Bay-breasted Warbler, including statistics on nesting, eggs and lifespan based on BTO ringing and nest recording data.

Survival and Longevity

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Survival is shown as the proportion of birds surviving from one year to the next and is derived from bird ringing data. It can also be used to estimate how long birds typically live.

Classification, names and codes

Taxonomy, names and species codes for Bay-breasted Warbler

Classification and Codes

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Order: Passeriformes
Family: Parulidae
Scientific name: Setophaga castanea
Authority: A Wilson, 1810

Euring code number: 17540

Alternate species names

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Catalan: bosquerola castanya
Czech: lesnácek kaštanovoprsý
Danish: Brunbrystet Sanger
Dutch: Kastanjezanger
Estonian: ruskesäälik
Finnish: rusorintakerttuli
French: Paruline à poitrine baie

German: Braunkehl-Waldsänger
Hungarian: rozsdás lombjáró
Icelandic: Hnotskríkja
Italian: Dendroica pettocastano
Latvian: berkrušu kaukis
Lithuanian: rudakrutis kruminukas
Norwegian: Kastanjeparula

Polish: lasówka kasztanowata
Portuguese: mariquita-de-peito-baio
Slovak: horárik smrekový
Slovenian: kostanjevi gozdicar
Spanish: Reinita castaña
Swedish: brunbröstad skogssångare

More Evidence

More evidence from Conservation Evidence.com

Partners

Birdfacts is based on data collected by volunteers participating in surveys that are organised and funded by BTO, RSPB, Esmée Fairbairn Foundation, JNCC and other partners.

BTO

Esmée Fairbairn Foundation

JNCC

RSPB

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