Red-eyed Vireo

Q: What are the chances of seeing a Red-eyed Vireo in Philadelphia?

Possible. About 20% of wildlife watchers report a Red-eyed Vireo sighting in Philadelphia on a given day, based on 3,683 verified sightings from GBIF citizen-science data. It is the 41st most-seen of the 248 birds we can rate there. Over three days the chance rises to about 40%, and over a week to about 70%, if each day is a fresh chance.

Q: When is the best time to see a Red-eyed Vireo in Philadelphia?

May. In that month about 40% of wildlife watchers report a Red-eyed Vireo in Philadelphia on a given day, against under 5% in November to April, the lowest months.

Q: What time of day is best to see a Red-eyed Vireo?

Between 8 and 11 am. Across all the parks we cover, that three-hour window holds the most Red-eyed Vireo sightings with a recorded time, and nearly all of them come between 6 am and 6 pm: it is a daytime animal.

Q: Is Philadelphia the best place to see a Red-eyed Vireo?

11th of 62. Of the 62 cities where we can rate Red-eyed Vireo sightings, Philadelphia ranks 11th at about 20%. The best odds are in Manaus (Brazil, about 30%), São Luís (Brazil, about 30%) and Montreal (Canada, about 20%).

Q: Where does the Red-eyed Vireo sighting chance come from?

GBIF citizen-science records. It is estimated from how often the Red-eyed Vireo is recorded against all the birds logged in Philadelphia (3,683 verified sightings), calibrated against known sighting rates. Figures are rounded to the nearest 10% because citizen-science data supports honest approximations, not decimals, and months with records from fewer than five people show "—". How it works.

Vireo olivaceus

Silhouette: Andy Wilson · PhyloPic

LCLeast ConcernNTVUENCR

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

Daily sighting probability ~20% · Possible

at Philadelphia

In 3 days ~40% in a week ~70%

3,683 Verified sightings at Philadelphia

33,999 In all 101 parks From 2019 to 2026

May Best month

☀️ Diurnal When it's spotted

About the Red-eyed Vireo

The red-eyed vireo (Vireo olivaceus) is a small American songbird. It is somewhat warbler-like but not closely related to the New World warblers (Parulidae). Common across its vast range, this species is not considered threatened by the IUCN.

Vireo is a Latin word referring to a green migratory bird, perhaps the female golden oriole, possibly the European greenfinch. The specific olivaceus is Neo-Latin for 'olive-green', from Latin oliva ('olive'). Adults are mainly olive-green on the upper parts with white underparts; they have a red iris and a grey crown edged with black. There is a dark blackish line through the eyes and a wide white stripe just above that line. They have thick blue-grey legs and a stout bill. They are yellowish on the flanks and undertail coverts (though this is faint in some populations).

In the past, the yellow-green vireo (V. flavoviridis), the chivi vireo (V. chivi), and the Noronha vireo (V. gracilirostris) have been considered to be conspecific with the red-eyed vireo; the chivi vireo was split most recently. Other closely related species include the black-whiskered vireo (V. altiloquus) and the Yucatan vireo (V. magister... Wikipedia →

Sounds

Song0:47

Canada · 2018

Imitation0:19

United States · 2021

Uncertain0:28

United States · 2021

Global Distribution

Where it is recorded most Our parks where it lives Our cities where it lives

Parks Where Found

#	Park	Country	Daily sighting probability
1	Voyageurs National Park	🇺🇸 United States	~60%
2	Riding Mountain National Park	🇨🇦 Canada	~50%
3	Elk Island National Park	🇨🇦 Canada	~50%
4	Great Smoky Mountains National Park	🇺🇸 United States	~40%
5	Serra dos Órgãos National Park	🇧🇷 Brazil	~40%
6	Cape Breton Highlands National Park	🇨🇦 Canada	~40%
7	Isle Royale National Park	🇺🇸 United States	~40%
8	Shenandoah National Park	🇺🇸 United States	~40%
9	Machalilla National Park	🇪🇨 Ecuador	~40%
10	Congaree National Park	🇺🇸 United States	~40%
11	Point Pelee National Park	🇨🇦 Canada	~30%
12	Brownsberg Nature Park	🇸🇷 Suriname	~30%
13	Acadia National Park	🇺🇸 United States	~30%
14	Main Ridge Forest Reserve	🇹🇹 Trinidad and Tobago	~30%
15	Iberá National Park	🇦🇷 Argentina	~30%
16	Pico Bonito National Park	🇭🇳 Honduras	~20%
17	Bastimentos Island National Marine Park	🇵🇦 Panama	~20%
18	Sierra de la Macarena National Park	🇨🇴 Colombia	~20%
19	Anavilhanas National Park	🇧🇷 Brazil	~20%
20	Biotopo Cerro Cahuí	🇬🇹 Guatemala	~20%
21	Iguazú National Park	🇦🇷 Argentina	~20%
22	Gandoca-Manzanillo Wildlife Refuge	🇨🇷 Costa Rica	~20%
23	Amboró National Park	🇧🇴 Bolivia	~20%
24	El Impenetrable National Park	🇦🇷 Argentina	~20%
25	Iguaçu National Park	🇧🇷 Brazil	~20%
26	Cahuita National Park	🇨🇷 Costa Rica	~20%
27	Tijuca National Park	🇧🇷 Brazil	~10%
28	Tikal National Park	🇬🇹 Guatemala	~10%
29	Chapada dos Guimarães National Park	🇧🇷 Brazil	~10%
30	Amacayacu National Natural Park	🇨🇴 Colombia	~10%
31	Soberanía National Park	🇵🇦 Panama	~10%
32	La Amistad International Park (Panama)	🇵🇦 Panama	~10%
33	Manu National Park	🇵🇪 Peru	~10%
34	Chagres National Park	🇵🇦 Panama	~10%
35	Henri Pittier National Park	🇻🇪 Venezuela	~10%
36	Cockscomb Basin Wildlife Sanctuary	🇧🇿 Belize	~10%
37	Cusuco National Park	🇭🇳 Honduras	~10%
38	Wood Buffalo National Park	🇨🇦 Canada	~10%
39	Tambopata National Reserve	🇵🇪 Peru	~10%
40	Parque Natural Metropolitano	🇵🇦 Panama	~10%
41	Tortuguero National Park	🇨🇷 Costa Rica	~10%
42	Darién National Park	🇵🇦 Panama	~10%
43	Itatiaia National Park	🇧🇷 Brazil	~10%
44	Tayrona National Natural Park	🇨🇴 Colombia	~10%
45	Tenorio Volcano National Park	🇨🇷 Costa Rica	~10%
46	Farallones de Cali National Natural Park	🇨🇴 Colombia	~10%
47	Celestún Biosphere Reserve	🇲🇽 Mexico	~10%
48	Glacier National Park	🇺🇸 United States	~10%
49	Santa Rosa National Park	🇨🇷 Costa Rica	~10%
50	Rincón de la Vieja National Park	🇨🇷 Costa Rica	~10%
51	Cerro Azul Meámbar National Park	🇭🇳 Honduras	~10%
52	Utría National Natural Park	🇨🇴 Colombia	~10%
53	Isla del Coco National Park	🇨🇷 Costa Rica	~10%
54	Yasuní National Park	🇪🇨 Ecuador	<5%
55	Serra da Canastra National Park	🇧🇷 Brazil	<5%
56	La Tigra National Park	🇭🇳 Honduras	<5%
57	Arenal Volcano National Park	🇨🇷 Costa Rica	<5%
58	Sian Ka'an Biosphere Reserve	🇲🇽 Mexico	<5%
59	Braulio Carrillo National Park	🇨🇷 Costa Rica	<5%
60	Montes Azules Biosphere Reserve	🇲🇽 Mexico	<5%
61	San Lorenzo Protected Forest	🇵🇦 Panama	<5%
62	Gros Morne National Park	🇨🇦 Canada	<5%
63	El Palmar National Park	🇦🇷 Argentina	<5%
64	Tapantí-Macizo de la Muerte National Park	🇨🇷 Costa Rica	<5%
65	Big Cypress National Preserve	🇺🇸 United States	<5%
66	Arrecifes de Cozumel National Park	🇲🇽 Mexico	<5%
67	Monteverde Cloud Forest Reserve	🇨🇷 Costa Rica	<5%
68	Cañón del Sumidero National Park	🇲🇽 Mexico	<5%
69	Merritt Island National Wildlife Refuge	🇺🇸 United States	<5%
70	Calakmul Biosphere Reserve	🇲🇽 Mexico	<5%
71	Carara National Park	🇨🇷 Costa Rica	<5%
72	Lago de Yojoa	🇭🇳 Honduras	<5%
73	Chapada Diamantina National Park	🇧🇷 Brazil	<5%
74	Parque Estadual Encontro das Águas	🇧🇷 Brazil	<5%
75	Manuel Antonio National Park	🇨🇷 Costa Rica	<5%
76	Everglades National Park	🇺🇸 United States	<5%
77	Las Baulas Marine National Park	🇨🇷 Costa Rica	<5%
78	Podocarpus National Park	🇪🇨 Ecuador	<5%
79	Marino Ballena National Park	🇨🇷 Costa Rica	<5%
80	Piedras Blancas National Park	🇨🇷 Costa Rica	<5%
81	Chirripó National Park	🇨🇷 Costa Rica	<5%
82	Volcán Barú National Park	🇵🇦 Panama	<5%
83	Cumbres de Monterrey National Park	🇲🇽 Mexico	<5%
84	Poás Volcano National Park	🇨🇷 Costa Rica	<5%
85	Jasper National Park	🇨🇦 Canada	<5%
86	Chingaza National Natural Park	🇨🇴 Colombia	<5%
87	Banff National Park	🇨🇦 Canada	<5%
88	Cuyabeno Wildlife Reserve	🇪🇨 Ecuador	<5%
89	Cabo Blanco Absolute Nature Reserve	🇨🇷 Costa Rica	<5%
90	Ostional Wildlife Refuge	🇨🇷 Costa Rica	<5%
91	Palo Verde National Park	🇨🇷 Costa Rica	<5%
92	Corcovado National Park	🇨🇷 Costa Rica	<5%
93	Big Bend National Park	🇺🇸 United States	<5%
94	Ciénaga de Zapata	🇨🇺 Cuba	<5%
95	Joshua Tree National Park	🇺🇸 United States	<5%
96	Channel Islands National Park	🇺🇸 United States	<5%
97	Masaya Volcano National Park	🇳🇮 Nicaragua	<5%
98	Los Quetzales National Park	🇨🇷 Costa Rica	<5%
99	Rocky Mountain National Park	🇺🇸 United States	<5%
100	Los Nevados National Natural Park	🇨🇴 Colombia	<5%
101	Great Bear Rainforest	🇨🇦 Canada	<5%

Cities Where Found

#	City	Country	Daily sighting probability
1	Manaus	🇧🇷 Brazil	~30%
2	São Luís	🇧🇷 Brazil	~30%
3	Montreal	🇨🇦 Canada	~20%
4	João Pessoa	🇧🇷 Brazil	~20%
5	Bogota	🇨🇴 Colombia	~20%
6	Cali	🇨🇴 Colombia	~20%
7	Maceió	🇧🇷 Brazil	~20%
8	Washington	🇺🇸 United States	~20%
9	Edmonton	🇨🇦 Canada	~20%
10	Buenos Aires	🇦🇷 Argentina	~20%

Closest Relatives at Philadelphia

Vireo gilvus

Daily sighting probability ~10% · With luck

Vireo solitarius

Daily sighting probability <5% · Rare

Vireo flavifrons

Daily sighting probability <5% · Rare

Vireo griseus

Daily sighting probability <5% · Rare

Vireo philadelphicus

Daily sighting probability <5% · Rare

Cardinalis cardinalis

Daily sighting probability ~90% · Very likely

Turdus migratorius

Daily sighting probability ~90% · Very likely

Melospiza melodia

Daily sighting probability ~70% · Very likely

Thryothorus ludovicianus

Daily sighting probability ~70% · Very likely

Passer domesticus

Daily sighting probability ~70% · Very likely

Cyanocitta cristata

Daily sighting probability ~70% · Very likely

Sturnus vulgaris

Daily sighting probability ~60% · Likely

See all 12 relatives Show fewer

Before you go

What are the chances of seeing a Red-eyed Vireo in Philadelphia?

Possible

About 20% of wildlife watchers report a Red-eyed Vireo sighting in Philadelphia on a given day, based on 3,683 verified sightings from GBIF citizen-science data. It is the 41st most-seen of the 248 birds we can rate there. Over three days the chance rises to about 40%, and over a week to about 70%, if each day is a fresh chance.

When is the best time to see a Red-eyed Vireo in Philadelphia?

May

In that month about 40% of wildlife watchers report a Red-eyed Vireo in Philadelphia on a given day, against under 5% in November to April, the lowest months.

What time of day is best to see a Red-eyed Vireo?

Between 8 and 11 am

Across all the parks we cover, that three-hour window holds the most Red-eyed Vireo sightings with a recorded time, and nearly all of them come between 6 am and 6 pm: it is a daytime animal.

Is Philadelphia the best place to see a Red-eyed Vireo?

11th of 62

Of the 62 cities where we can rate Red-eyed Vireo sightings, Philadelphia ranks 11th at about 20%. The best odds are in Manaus (Brazil, about 30%), São Luís (Brazil, about 30%) and Montreal (Canada, about 20%).

Where does the Red-eyed Vireo sighting chance come from?

GBIF citizen-science records

It is estimated from how often the Red-eyed Vireo is recorded against all the birds logged in Philadelphia (3,683 verified sightings), calibrated against known sighting rates. Figures are rounded to the nearest 10% because citizen-science data supports honest approximations, not decimals, and months with records from fewer than five people show "—". How it works.

← Back to Philadelphia

Red-eyed Vireo

About the Red-eyed Vireo

Sounds

Recent sightings of Red-eyed Vireo in Philadelphia

Global Distribution

Parks Where Found

Cities Where Found

Closest Relatives at Philadelphia

Warbling Vireo

Blue-headed Vireo

Yellow-throated Vireo

White-eyed Vireo

Philadelphia Vireo

Northern Cardinal

American Robin

Song Sparrow

Carolina Wren

House Sparrow

Blue Jay

European Starling

Before you go

What are the chances of seeing a Red-eyed Vireo in Philadelphia?

When is the best time to see a Red-eyed Vireo in Philadelphia?

What time of day is best to see a Red-eyed Vireo?

Is Philadelphia the best place to see a Red-eyed Vireo?

Where does the Red-eyed Vireo sighting chance come from?