Where’s Wildlife · Bird Field Guide
Bell’s Vireo
Vireo bellii
Pronounced (approx.): VEER-ee-oh BEL-eye
This small vireo often stays within dense shrubs and flicks its tail while moving.
Three Identification Clues
A grayish head, subtle pale eye-ring, and two pale wing bars.
Eastern birds show olive upperparts and yellowish sides.
A small but fairly stout bill and active tail movements; song is useful for confirmation.
Field Photographs
Showing 5 of 5 photographs.
Beyond the first impression
Plumage & Identification
Expect regional variation
Eastern birds have greener upperparts, yellowish sides, and more noticeable wingbars. Western birds can be much grayer and whiter. Both have a subtle pale pattern around the eye; its strength varies. Compare photographs from the appropriate region rather than expecting every bird to match one image. [1]
A small bird with a useful silhouette
Look for a slim body, relatively long tail, and small bill that is still sturdier and more hooked than a warbler’s. Frequent tail movements are helpful. A singing bird may emerge onto an outer branch, giving a better view than a brief glimpse inside the brush. [1]
Life history
How This Bird Lives
Where to look
Concentrate on low, tangled growth: brushy fields, shrubby prairie edges, young woodland, and streamside thickets. Even with taller trees nearby, the bird often remains in the lower vegetation. Listen patiently from an edge rather than entering the thicket. [1] [3]
Food & foraging
Bell’s Vireos pluck insects and spiders from leaves and small branches. They also hover to reach prey or catch insects in the air. Most feeding is low in the vegetation, although birds may go higher when food is available. [2]
A cup held by a branch fork
The pair usually chooses a low fork and builds together. Spider silk helps attach and tighten a cup made from fine plant material, bark, and other fibers. The nest is often only a few feet above the ground. [2]
Clutches contain 2–4 eggs. Incubation lasts about 14–15 days, with young in the nest roughly 10–12 days. Adults defend the area against intruders, including cowbirds that may attempt to lay eggs in the nest. [2]
Did you know?
A Closer Look at Bell’s Vireos
Foraging as a pair
A pair may work upward through the branches together in a spiral, searching the surrounding leaves for insects. [3]
The person behind the name
Audubon named the bird for John Graham Bell, who accompanied him on an 1843 Missouri River expedition. [3]
A connection to the Cowbird
Nest defense links this bird’s story to the Brown-headed Cowbird. The two guides show different sides of the same brood-parasitism relationship. [2]
Sources: [1] Cornell · Identification[2] Cornell · Life history[3] Cornell · Species overview
Range & Sightings
Recorded Observations
Explore sightings on iNaturalist. Observation records are not a complete range map.
Keep Learning
Compare several photographs, then listen to recordings to connect appearance with voice.