Worm-eating Warbler

Worm-eating Warbler

Helmitheros vermivorum

Least ConcernNear ThreatenedVulnerableEndangeredCritically Endangered
Daily sighting probability Insufficient data
at Saguaro National Park
4 Verified sightings at Saguaro National Park From 2019 to 2026
4,017 Verified sightings across all 52 parks From 2019 to 2026
☀️ Diurnal When it's spotted during daytime hours (6am–6pm)

About the Worm-eating Warbler

The worm-eating warbler (Helmitheros vermivorum) is a small New World warbler that breeds in the Eastern United States and migrates to southern Mexico, the Caribbean, and Central America for the winter. It is the only species in the genus Helmitheros.

The worm-eating warbler was formally described in 1789 by the German naturalist Johann Friedrich Gmelin in his revised and expanded edition of Carl Linnaeus's Systema Naturae. He placed it with the wagtails in the genus Motacilla and coined the binomial name Motacilla vermivora. Gmelin based his account on the "worm-eater" that had been described and illustrated in 1760 by the English naturalist George Edwards in his Gleanings of Natural History. Edwards had received a specimen from the American naturalist William Bartram that had been collected in Pennsylvania. The worm-eating warbler is now placed in the genus Helmitheros that was introduced in 1819 by the French polymath Constantine Samuel Rafinesque. The genus name combines the Ancient Greek helmins meaning "worm", and -thēras meaning "hunter". The specific epithet vermivorum is from Latin vermis meaning "worm" and -vorus meaning "-eating". The species is monotypic:... Wikipedia →

Global Distribution

Where this species is recorded worldwide. Restricted to human observations from 2019 onwards — the same kind of record and the same period the probabilities on this page are built from, so collar-tracking studies, camera-trap arrays and museum specimens are excluded. Around Santa Rosa that removes 5,924 GPS fixes from a handful of tagged jaguars.

where this species is recorded (GBIF density — it tracks where observers go, not how likely a sighting is)  ·  parks where it occurs — tap a pin for the sighting probability there

Parks Where Found

# Park Country Daily sighting probability
1 Blue and John Crow Mountains National Park 🇯🇲 Jamaica
~30%
2 Biotopo Cerro Cahuí 🇬🇹 Guatemala
~20%
3 Montes Azules Biosphere Reserve 🇲🇽 Mexico
~20%
4 Tikal National Park 🇬🇹 Guatemala
~20%
5 Cockscomb Basin Wildlife Sanctuary 🇧🇿 Belize
~10%
6 Calakmul Biosphere Reserve 🇲🇽 Mexico
~10%
7 Pico Bonito National Park 🇭🇳 Honduras
~10%
8 El Triunfo 🇲🇽 Mexico
~10%
9 Ciénaga de Zapata 🇨🇺 Cuba
~10%
10 Sian Ka'an Biosphere Reserve 🇲🇽 Mexico
~10%
11 Great Smoky Mountains National Park 🇺🇸 United States
~10%
12 Shenandoah National Park 🇺🇸 United States
<5%
13 Arrecifes de Cozumel National Park 🇲🇽 Mexico
<5%
14 La Tigra National Park 🇭🇳 Honduras
<5%
15 Cusuco National Park 🇭🇳 Honduras
<5%
16 Cañón del Sumidero National Park 🇲🇽 Mexico
<5%
17 Congaree National Park 🇺🇸 United States
<5%
18 Cabo Blanco Absolute Nature Reserve 🇨🇷 Costa Rica
<5%
19 Rincón de la Vieja National Park 🇨🇷 Costa Rica
<5%
20 Santa Rosa National Park 🇨🇷 Costa Rica
<5%
21 Carara National Park 🇨🇷 Costa Rica
<5%
22 Everglades National Park 🇺🇸 United States
<5%
23 Manuel Antonio National Park 🇨🇷 Costa Rica
<5%
24 Lago de Yojoa 🇭🇳 Honduras
<5%
25 Bastimentos Island National Marine Park 🇵🇦 Panama
<5%
26 Monteverde Cloud Forest Reserve 🇨🇷 Costa Rica
<5%
27 Celestún Biosphere Reserve 🇲🇽 Mexico
<5%
28 Big Cypress National Preserve 🇺🇸 United States
<5%
29 Point Pelee National Park 🇨🇦 Canada
<5%
30 La Amistad International Park (Panama) 🇵🇦 Panama
<5%
31 Tenorio Volcano National Park 🇨🇷 Costa Rica
<5%
32 Tapantí-Macizo de la Muerte National Park 🇨🇷 Costa Rica
<5%
33 Death Valley National Park 🇺🇸 United States
<5%
34 Arenal Volcano National Park 🇨🇷 Costa Rica
<5%
35 Soberanía National Park 🇵🇦 Panama
<5%
36 Celaque National Park 🇭🇳 Honduras
Insufficient data
37 Coiba National Park 🇵🇦 Panama
Insufficient data
38 Marino Ballena National Park 🇨🇷 Costa Rica
Insufficient data
39 Volcán Barú National Park 🇵🇦 Panama
Insufficient data
40 Cahuita National Park 🇨🇷 Costa Rica
Insufficient data
41 Ostional Wildlife Refuge 🇨🇷 Costa Rica
Insufficient data
42 Cerro Azul Meámbar National Park 🇭🇳 Honduras
Insufficient data
43 Chirripó National Park 🇨🇷 Costa Rica
Insufficient data
44 Masaya Volcano National Park 🇳🇮 Nicaragua
Insufficient data
45 Chagres National Park 🇵🇦 Panama
Insufficient data
46 Gandoca-Manzanillo Wildlife Refuge 🇨🇷 Costa Rica
Insufficient data
47 Corcovado National Park 🇨🇷 Costa Rica
Insufficient data
48 Parque Natural Metropolitano 🇵🇦 Panama
Insufficient data
49 Braulio Carrillo National Park 🇨🇷 Costa Rica
Insufficient data
50 Acadia National Park 🇺🇸 United States
Insufficient data
51 Tortuguero National Park 🇨🇷 Costa Rica
Insufficient data
52 Saguaro National Park 🇺🇸 United States
Insufficient data
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