Warbling Vireo
Vireo gilvus
Also known as: Eastern Warbling-Vireo, Warbling Flycatcher, Western Warbling Vireo
About This Species
This plain grey-green songbird is far easier to hear than see, singing a rolling, cheerful warble from leafy deciduous canopy through the breeding season. Look for it moving methodically along horizontal branches in cottonwoods, aspens, and streamside trees rather than flitting like a warbler. Late spring through summer, in open woodland edges and riparian corridors across North America, is the best window before it heads south for winter.
Ethical Viewing Guidelines
- A relaxed, unhurried observer standing back from the nest tree causes the least disruption, since these birds will scold and abandon feeding if pressed too closely during nesting.
- Wild bird nests and adults are legally protected across most of its range in the US and Canada, making deliberate disturbance during breeding an offence rather than just bad practice.
- Watching from a path or clearing with binoculars, rather than approaching the tree directly, keeps stress to a minimum.
LCAvesPasseriformesVireonidae
Seasonal Activity
3,389,550 sightings · 2000–2026
Citizen science records via GBIF
All monthsThis month
Classification
- Kingdom
- Animalia
- Phylum
- Chordata
- Class
- Aves
- Order
- Passeriformes
- Family
- Vireonidae
Photo
(c) Ad Konings, some rights reserved (CC BY-NC), uploaded by Ad Konings
CC-BY-NC-4.0
Occurrence data from GBIF.