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Contents

   



(Top)
 


1 Description  





2 Behavior and ecology  





3 References  





4 External links  














Bell's vireo






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From Wikipedia, the free encyclopedia
 


Bell's vireo

Conservation status


Least Concern  (IUCN 3.1)[1]

Scientific classification Edit this classification
Domain: Eukaryota
Kingdom: Animalia
Phylum: Chordata
Class: Aves
Order: Passeriformes
Family: Vireonidae
Genus: Vireo
Species:
V. bellii
Binomial name
Vireo bellii

Audubon, 1844

Least Bell's vireo with leg band, grasped in human hand.

Bell's vireo (Vireo bellii)[2] is a songbird that migrates between a breeding range in Western North America and a winter range in Central America. It is 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.

Description

[edit]

Measurements:[3]

Behavior and ecology

[edit]

Bell's vireos often use dense shrubbery including willows (Salix spp.), mulefat (Baccharis glutinosa), California wild rose (Rosa californica), mugwort (Artemisia douglasiana), Fremont cottonwood (Populus fremontii), and Western poison oak (Toxicodendron diversilobum) shrubs or vines as nesting locations. Bell's vireos make a well-camouflaged nest but when found they will stand its ground against intruders. As with many other North American songbirds, brown-headed cowbirds parasitise Bell's vireo nests, letting the vireos raise their young.[4][5]

Historically, the least Bell's vireo was a common to locally abundant species in lowland riparian habitat, ranging from coastal southern California through the Sacramento and San Joaquin Valleys as far north as Red BluffinTehama County. Populations also occurred in the foothill streams of the Sierra Nevada and Coast Ranges, and in Owens Valley, Death Valley, and scattered locations in the Mojave Desert. Least Bell's vireos winter in Baja California Peninsula. Unlike during the breeding season, they are not limited in winter to willow-dominated riparian areas, but occupy a variety of habitats including mesquite scrub within arroyos, palm groves, and hedgerows bordering agricultural and residential areas. At the time of endangered species listing by the U.S. Fish and Wildlife Service in 1986, it had been extirpated from most of its historic range, and numbered just 300 pairs statewide. Populations were confined to eight counties south of Santa Barbara, with the majority of birds occurring in San Diego County. In the decade since listing, least Bell's vireo numbers have increased six-fold, and the species is expanding into its historic range. In 1998, the population size was estimated at 2,000 pairs. Nesting least Bell's vireos have recolonized the Santa Clara RiverinVentura County, where 67 pairs nested in 1998, and the Mojave RiverinSan Bernardino County. The northernmost reported sighting in recent years is of a nesting pair of least Bell's vireos near GilroyinSanta Clara County in 1997. Roughly half of the current least Bell's vireo population occurs on drainages within Marine Corps Base Camp Pendleton in San Diego County, particularly in the lower Santa Margarita River.[4]

References

[edit]
  1. ^ BirdLife International (2018). "Vireo bellii". IUCN Red List of Threatened Species. 2018: e.T22705156A131396337. doi:10.2305/IUCN.UK.2018-2.RLTS.T22705156A131396337.en. Retrieved 11 November 2021.
  • ^ "Species factsheet: Vireo bellii". BirdLife International. 2014. Retrieved 4 November 2014.
  • ^ "Bell's Vireo Identification, All About Birds, Cornell Lab of Ornithology". www.allaboutbirds.org. Retrieved 2020-09-27.
  • ^ a b Kus, Barbara (2002). "Least Bell's Vireo (Vireo bellii pusillus)". The Riparian Bird Conservation Plan: a strategy for reversing the decline of riparian-associated birds in California. California Partners in Flight. PRBO Conservation Science. Retrieved 16 February 2013.
  • ^ Hogan, C. Michael (2008). Western poison-oak: Toxicodendron diversilobum, GlobalTwitcher, ed. Nicklas Stromberg "Western Poison-oak (Toxicodendron diversilobum ) - - GlobalTwitcher.com". Archived from the original on 2009-07-21. Retrieved 2010-04-21.
  • [edit]
    Retrieved from "https://en.wikipedia.org/w/index.php?title=Bell%27s_vireo&oldid=1216730636"

    Categories: 
    IUCN Red List least concern species
    Vireo (genus)
    Native birds of the Plains-Midwest (United States)
    Fauna of the Sonoran Desert
    Fauna of the Yuma Desert
    Fauna of the Chihuahuan Desert
    Fauna of the Lower Colorado River Valley
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    Birds of Mexico
    Birds described in 1844
    Taxa named by John James Audubon
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