Vireo gilvus
The Warbling Vireo (Vireo gilvus) is a small, unassuming passerine whose presence is often first detected by its eponymous, cheerful song rather than its appearance. Measuring approximately 12-14 cm (4.7-5.5 in) in length with a wingspan of 19-22 cm (7.5-8.7 in) and weighing 10-15 grams, this vireo sports a rather plain plumage. Its upperparts are a dull grey-olive, contrasting subtly with clean whitish underparts, and it lacks prominent wing bars that characterize some other vireo species. A...
This adaptable species primarily inhabits open deciduous or mixed deciduous-coniferous woodlands, often favoring riparian corridors, suburban parks, and orchards. It thrives across a wide range of elevations from sea level up to moderate mountain slopes.
Warbling Vireos are primarily insectivorous, consuming a wide variety of arthropods including caterpillars, beetles, flies, and spiders. In late summer and fall, they supplement their diet with small fruits and berries, gleaning them directly from vegetation.
The Warbling Vireo is a diurnal species, spending its active hours methodically foraging for insects high in the tree canopy or mid-story. Its primary foraging strategy involves gleaning arthropods from the undersides of leaves and small twigs, occasionally performing short hover-gleans to snatch...
The Warbling Vireo boasts an expansive breeding range across much of North America, extending from southern Canada, including regions from Yukon to Nova Scotia, south through the majority of the contiguous United States. Its western breeding distribution reaches California and the Pacific Northwe...
Least Concern
- The Warbling Vireo's name is a direct reference to its complex, melodious song, which is its most distinctive feature. - Males are known to sing almost continuously during the breeding season, sometimes delivering over 1,000 songs in a single day. - Despite its plain plumage, often described as...