Philadelphia Vireo

Vireo philadelphicus (Cassin, 1851) PHIVI 16310
Family: Passeriformes > Vireonidae

Philadelphia Vireo, Simon Gillings

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.

Select a topic for more facts and statistics about the Philadelphia Vireo

  • Breeding
  • Winter
18 records observations recorded by BTO surveyors
18 records


18 records observations recorded by BTO surveyors
18 records



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Status and Trends

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


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


We have no population estimates for this scarce species.


Information about movement and migration based on online bird portals (e.g. BirdTrack), Ringing schemes and tracking studies.


View a summary of recoveries in the Online Ringing Report.


Lifecycle and body size information about Philadelphia Vireo, including statistics on nesting, eggs and lifespan based on BTO ringing and nest recording data.


Sample sizes are too small to report Productivity and Nesting statistics for this species.


For information in another language (where available) click on a linked name

Welsh: Fireo Philadelphia
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

Links to more information from

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