Philadelphia Vireo

Vireo philadelphicus

Introduction

Looking a bit like a greenish Garden Warbler, this is an extremely rare visitor from the woodlands of southern Canada, brought here by autumn storms.

The first Irish record – and first for the Western Palearctic – came in 1985, and was followed two years later by the first British record, a bird on Tresco, Isles of Scilly in October 1987.

The Philadelphia Vireo has the most northerly breeding range of any vireo and winters in southern Central America.

Key Stats

Status

Very rare

Weight

13g

Seasonality

BTO Records

18 records

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*

Isles of Scilly, 1987 (Cork, 1985)

* 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 has not been recorded in the UK for many decades and as such cannot be mapped.

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 Philadelphia Vireo 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 Philadelphia Vireo, 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 Philadelphia Vireo

Classification and Codes

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Order: Passeriformes
Family: Vireonidae
Scientific name: Vireo philadelphicus
Authority: Cassin, 1851

BTO 5-letter code: PHIVI
Euring code number: 16310

Alternate species names

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Catalan: viri de Filadèlfia
Czech: zelenácek kanadský
Danish: Philadelphia-vireo
Dutch: Philadelphiavireo
Estonian: kanada virelind
Finnish: kanadanvireo
French: Viréo de Philadelphie

German: Philadelphiavireo
Hungarian: sárgahasú lombgébics
Icelandic: Kollgræningi
Irish: Glaséan Philadelphia
Italian: Vireo di Filadelfia
Latvian: Filadelfijas zalulis
Lithuanian: filadelfinis vireonas
Norwegian: Kanadavireo

Polish: wireonek cytrynowy
Portuguese: juruviara-de-filadélfia
Slovak: vireo stahovavý
Slovenian: filadelfijski virej
Spanish: Vireo de Filadelfia
Swedish: kanadavireo
Welsh: Fireo Philadelphia

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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