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Photo by U. S. Fish and Wildlife Service
Photo Courtesy of U. S. Fish and Wildlife Service
Bell's vireo
Vireo bellii
NatureServe conservation status
Global (G-rank): G5
State (S-rank): SUB
External links
Species range
In Utah this species occurs only in the Virgin River valley of southern Washington County.
Habitat
Woodbury et al. (1949) reported this species in Utah "along Virgin River streamside willows and tamarix". Walters and Sorensen (1983) considered the breeding habitat of this species in Utah to be desert riparian woodlands (including Fremont cottonwood, willows, etc., at lower elevations), a habitat in which nesting is known in Utah.
Threats or limiting factors
Threats to this species are not known in Utah. Brown (1993), however, pointed out: "In sw. U.S., riparian habitat modifications--including agriculture, urbanization, firewood cutting, grazing, flood control projects, and reservoir construction--have reduced habitat for this species." Also, nests of this species are heavily parasitized by brown-headed cowbirds (see, for example, Lowther 1993 and Brown 1993), which are favored by human alterations of the environment such as clearing of woody vegetation, agriculture, and ranching.
