Worm-Eating Warbler
Helmitheros vermivorum
About This Species
Search the leaf-littered understory and dense shrub layer of mature deciduous forest in the eastern United States, where it forages methodically along dead leaf clusters and low branches for caterpillars and other insects despite its name. Its plain, buff-brown plumage and insect-like, buzzy trill make it easy to overlook, so listening for the song from May through summer on breeding territory is the most reliable way to find one. Migration periods bring occasional sightings in more open woodland edges.
Ethical Viewing Guidelines
- Stay on trails and observe from a distance rather than pushing into dense understory, since this ground-nesting species is easily flushed from a well-hidden nest.
- Migratory bird protections apply across its North American breeding and wintering range, though the specifics differ between the United States, Canada and Central American countries it passes through, so avoid handling or closely approaching any nest found by chance.
LCAvesPasseriformesParulidae
Seasonal Activity
327,814 sightings · 2000–2026
Citizen science records via GBIF
All monthsThis month
Classification
- Kingdom
- Animalia
- Phylum
- Chordata
- Class
- Aves
- Order
- Passeriformes
- Family
- Parulidae
Photo
(c) carbenoid, some rights reserved (CC BY), uploaded by carbenoid
CC-BY-4.0
Occurrence data from GBIF.