Philadelphia Vireo

Vireo philadelphicus

Least ConcernNear ThreatenedVulnerableEndangeredCritically Endangered

KingdomAnimalia (Animals)
PhylumChordata (Chordates)
ClassAves (Birds)
OrderPasseriformes (Perching Birds)
FamilyVireonidae (Vireos, Shrike-Babblers, and Erpornis)
GenusVireo (Vireos)
SpeciesVireo philadelphicus (Philadelphia Vireo)

Daily sighting probability Insufficient data

at Saguaro National Park

1 Verified sightings at Saguaro National Park From 2019 to 2026

7,641 Verified sightings across all 67 parks From 2019 to 2026

☀️ Diurnal When it's spotted during daytime hours (6am–6pm)

About the Philadelphia Vireo

The Philadelphia vireo (Vireo philadelphicus) is a small North American songbird in the vireo family (Vireonidae). "Vireo" is a Latin word referring to a green migratory bird, perhaps the female golden oriole, possibly the European greenfinch. The specific philadelphicus is for the city of Philadelphia.

Adults are mainly olive-brown on the upperparts with yellow underparts; they have dark eyes and a grey crown. They have no wing bars and no eye ring. There is a dark line through the eyes and a white stripe just over them. They have thick blue-grey legs and a stout bill. The Philadelphia vireo is similar in appearance to the warbling vireo, but can be reliably distinguished by having much yellower underparts, and dark lores.

Their breeding habitat is the edges of deciduous and mixed woods across Canada. They make a basket-shaped cup nest in a fork of a tree branch, usually placed relatively high. The female lays 3 to 5 lightly spotted white eggs. Incubation, by both parents, lasts up to 14 days.

These birds migrate to Mexico and Central America. This vireo is a very rare vagrant to western Europe. They are unlikely to visit Philadelphia, except in migration... Wikipedia →

Closest Relatives at Saguaro National Park

Vireo bellii

Daily sighting probability ~20% · Possible

Vireo plumbeus

Daily sighting probability <5% · Rare

Vireo gilvus

Daily sighting probability <5% · Rare

Vireo griseus

Daily sighting probability Insufficient data

LC Endemic

Vireo cassinii

Daily sighting probability <5% · Rare

LC Endemic

Vireo huttoni

Daily sighting probability <5% · Rare

Vireo vicinior

Daily sighting probability <5% · Rare

Vireo solitarius

Daily sighting probability <5% · Rare

Vireo olivaceus

Daily sighting probability <5% · Rare

Auriparus flaviceps

Daily sighting probability ~80% · Very likely

LC Endemic

Haemorhous mexicanus

Daily sighting probability ~80% · Very likely

Spinus psaltria

Daily sighting probability ~70% · Very likely

See all 12 relatives Show fewer

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	Santa Rosa National Park	🇨🇷 Costa Rica	~20%
2	Rincón de la Vieja National Park	🇨🇷 Costa Rica	~20%
3	Monteverde Cloud Forest Reserve	🇨🇷 Costa Rica	~10%
4	Chirripó National Park	🇨🇷 Costa Rica	~10%
5	Los Quetzales National Park	🇨🇷 Costa Rica	~10%
6	Carara National Park	🇨🇷 Costa Rica	~10%
7	Pico Bonito National Park	🇭🇳 Honduras	~10%
8	Point Pelee National Park	🇨🇦 Canada	~10%
9	Cabo Blanco Absolute Nature Reserve	🇨🇷 Costa Rica	~10%
10	Biotopo Cerro Cahuí	🇬🇹 Guatemala	~10%
11	Manuel Antonio National Park	🇨🇷 Costa Rica	~10%
12	Riding Mountain National Park	🇨🇦 Canada	~10%
13	Tikal National Park	🇬🇹 Guatemala	~10%
14	Elk Island National Park	🇨🇦 Canada	~10%
15	La Tigra National Park	🇭🇳 Honduras	~10%
16	Palo Verde National Park	🇨🇷 Costa Rica	~10%
17	Tenorio Volcano National Park	🇨🇷 Costa Rica	~10%
18	La Amistad International Park (Panama)	🇵🇦 Panama	<5%
19	Lago de Yojoa	🇭🇳 Honduras	<5%
20	Gros Morne National Park	🇨🇦 Canada	<5%
21	Marino Ballena National Park	🇨🇷 Costa Rica	<5%
22	Irazú Volcano National Park	🇨🇷 Costa Rica	<5%
23	Chagres National Park	🇵🇦 Panama	<5%
24	Celaque National Park	🇭🇳 Honduras	<5%
25	Corcovado National Park	🇨🇷 Costa Rica	<5%
26	Ostional Wildlife Refuge	🇨🇷 Costa Rica	<5%
27	Tapantí-Macizo de la Muerte National Park	🇨🇷 Costa Rica	<5%
28	Cerro Azul Meámbar National Park	🇭🇳 Honduras	<5%
29	Piedras Blancas National Park	🇨🇷 Costa Rica	<5%
30	Arenal Volcano National Park	🇨🇷 Costa Rica	<5%
31	Cape Breton Highlands National Park	🇨🇦 Canada	<5%
32	Voyageurs National Park	🇺🇸 United States	<5%
33	Volcán Barú National Park	🇵🇦 Panama	<5%
34	Braulio Carrillo National Park	🇨🇷 Costa Rica	<5%
35	Isle Royale National Park	🇺🇸 United States	<5%
36	Cañón del Sumidero National Park	🇲🇽 Mexico	<5%
37	Montes Azules Biosphere Reserve	🇲🇽 Mexico	<5%
38	Tortuguero National Park	🇨🇷 Costa Rica	<5%
39	Poás Volcano National Park	🇨🇷 Costa Rica	<5%
40	Las Baulas Marine National Park	🇨🇷 Costa Rica	<5%
41	Sian Ka'an Biosphere Reserve	🇲🇽 Mexico	<5%
42	Cahuita National Park	🇨🇷 Costa Rica	<5%
43	Gandoca-Manzanillo Wildlife Refuge	🇨🇷 Costa Rica	<5%
44	Soberanía National Park	🇵🇦 Panama	<5%
45	Bastimentos Island National Marine Park	🇵🇦 Panama	<5%
46	Cockscomb Basin Wildlife Sanctuary	🇧🇿 Belize	<5%
47	Great Smoky Mountains National Park	🇺🇸 United States	<5%
48	Arrecifes de Cozumel National Park	🇲🇽 Mexico	<5%
49	Acadia National Park	🇺🇸 United States	<5%
50	Darién National Park	🇵🇦 Panama	<5%
51	Celestún Biosphere Reserve	🇲🇽 Mexico	<5%
52	Parque Natural Metropolitano	🇵🇦 Panama	<5%
53	Shenandoah National Park	🇺🇸 United States	<5%
54	Everglades National Park	🇺🇸 United States	<5%
55	Olympic National Park	🇺🇸 United States	<5%
56	Coiba National Park	🇵🇦 Panama	Insufficient data
57	Wood Buffalo National Park	🇨🇦 Canada	Insufficient data
58	El Triunfo	🇲🇽 Mexico	Insufficient data
59	Cusuco National Park	🇭🇳 Honduras	Insufficient data
60	Calakmul Biosphere Reserve	🇲🇽 Mexico	Insufficient data
61	Ría Lagartos Biosphere Reserve	🇲🇽 Mexico	Insufficient data
62	Death Valley National Park	🇺🇸 United States	Insufficient data
63	Big Cypress National Preserve	🇺🇸 United States	Insufficient data
64	Masaya Volcano National Park	🇳🇮 Nicaragua	Insufficient data
65	Rocky Mountain National Park	🇺🇸 United States	Insufficient data
66	Banff National Park	🇨🇦 Canada	Insufficient data
67	Saguaro National Park	🇺🇸 United States	Insufficient data

← Back to Saguaro National Park

Philadelphia Vireo

About the Philadelphia Vireo

Closest Relatives at Saguaro National Park

Bell's Vireo

Plumbeous Vireo

Warbling Vireo

White-eyed Vireo

Cassin's Vireo

Hutton's Vireo

Gray Vireo

Blue-headed Vireo

Red-eyed Vireo

Verdin

House Finch

Lesser Goldfinch

Global Distribution

Parks Where Found