Bell's vireo (Vireo bellii) is a small North American songbird. It is 4.75 to 5 in (12.1 to 12.7 cm) in length, dull olive-gray above and whitish below. It has a faint white eye ring and faint wing bars.

This bird was named by Audubon for John Graham Bell, who accompanied him on his trip up the Missouri River in the 1840s.

The least Bell's vireo (Vireo bellii pusillus), is an endangered subspecies in Southern California. Consideration of Bell's vireo has been a factor in several land development projects, to protect least Bell's vireo habitat. The decline of the least Bell's vireo is mostly due to a loss of riparian habitat and brood parasitism by the brown-headed cowbird (Molothrus ater).
Bell's Vireo
Date Location Count
2020-10-27 09:19Silver Sands SP1
2020-10-03 06:52Cape Cod Organic Farm1
2020-10-02 08:20Bagdad Mill Site Park1
2020-10-12 12:30Spanish River Park1
2020-10-16 11:06Chapel Trail (Sheridan Street Mitigation Bank)1
2020-10-23 07:39Canal-111E1
2020-10-14 07:01ACBS Surveys ONLY--Greenwood Island (Restricted Access)1
2020-10-10 16:49Clinton Lake--Overlook Park1
2020-10-01 14:07Galveston--Lafitte's Cove (UTC 068)1
2020-10-02 11:40West Bouldin Creek Greenbelt1
2020-09-29 08:00Warbler Woods Bird Sanctuary1
2020-10-17 12:20Area de Protección de Flora y Fauna Nahá2
2020-10-18 08:57Fort Peña Colorado Pk (The Post)(FWTX 28)1
2020-10-02Christmas Mountains Oasis1
2020-10-25 07:17Laguna Santo Domingo Ingenio4
2020-10-11 08:09Ojo de Agua Tolistoque1
2020-10-17 11:02Canal Principal--Ixtepec.1
2020-10-12 06:43Rio Los Perros--El Espinal3
2020-10-15 07:22Playa Santa Maria Xadani3
2020-09-29 08:37Bosque de Chapultepec--Primera Sección1
2020-09-30 08:01Volcán Teuhtli1
2020-10-20 10:51Presa Francisco I. Madero1
2020-10-17 15:04Vias Verde--Estanzuela2
2020-10-17 13:01Presa La Vega--Desembocadura del Río El Tajo1
2020-10-02 09:30Portal--Willow Tank1
2020-10-11 07:59Laguna de Tepeltitic1
2020-10-17 13:42Parque Ecológico de Tepic1
2020-10-17 16:40Camino al Cocodrilario3
2020-10-13 10:22Playa del Rey1
2020-10-18 06:03Onavas (pueblo)3
2020-09-30 10:58Mammoth Sewage Ponds1
2020-10-17 09:00Colossal Cave Mountain Park1
2020-09-30 07:55La Posta Quemada Ranch2
2020-10-07 09:44Agua Caliente Park1
2020-10-17 10:00Reid Park1
2020-10-17 07:26Oasis para las Aves2
2020-10-15 09:09Sonoita Creek State Natural Area (permit required)1
2020-10-11 15:35Elephant Head Pond1
2020-10-09 07:08Canoa Ranch Conservation Park1
2020-10-10 09:26De Anza Trail--Tubac1
2020-10-02 10:24De Anza Trail--Tumacacori1
2020-10-11 10:12Santa Gertrudis Lane (foot access only)1
2020-10-04 06:31Box Bar Recreation Site1
2020-09-29 08:28Needle Rock Recreation Area1
2020-10-25 14:45Riparian Preserve at Gilbert Water Ranch1
2020-10-09 06:20GRIC-MAR-5 wetlands (access restricted, entry by permit only)1
2020-10-04 12:58Indian School Park1
2020-10-22 07:21Presa Abelardo L. Rodríguez1
2020-10-19 14:30George Ditch1
2020-10-06 06:57Steele Indian School Park1
2020-10-08 09:20Tres Rios Overbank Wetlands (permit required)1
2020-10-12 15:10Wickenburg--Secret Ponds1
2020-10-17 07:35Presa Emilio López Zamora1
2020-10-06 10:23Arroyo San Carlos1
2020-09-30 08:15Arroyo Rosarito--Desembocadura1
2020-10-07 09:48SeaWorld (San Diego)1
2020-10-22 08:52West San Gabriel River Parkway Nature Trail1
2020-10-17 13:01Oxnard College1