Colinus virginianus

Taxonomy

Assessment Information

Geographic Range

Population

Habitat and Ecology

Threats

Conservation Actions

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Taxonomy [top]

Kingdom	Phylum	Class	Order	Family
ANIMALIA	CHORDATA	AVES	Galliformes	Odontophoridae

Scientific Name:

Colinus virginianus

Species Authority:

(Linnaeus, 1758)

Common Name/s:

English

–

Northern Bobwhite, Bobwhite, Bobwhite Quail

Taxonomic Notes:

Colinus virginianus (Sibley and Monroe 1990, 1993) was provisionally split into C. virginianus and C. ridgwayi by Stotz et al. (1996) but this treatment has not been adopted, following SACC (2005).

Assessment Information [top]

Red List Category & Criteria:

Near Threatened ver 3.1

Year Assessed:

2008

Assessor/s

BirdLife International

Evaluator/s:

Bird, J. & Butchart, S. (BirdLife International Red List Authority)

Justification:
This species qualifies as Near Threatened because it has suffered moderately rapid declines in recent decades becoming rarer in many traditional strongholds owing to habitat conversion.

History:

2004	–	Near Threatened
2000	–	Lower Risk/least concern
1994	–	Lower Risk/least concern
1988	–	Lower Risk/least concern

Geographic Range [top]

Range Description:	Colinus virginianus is resident throughout east North America (from south Mexico and west Guatemala through the USA to extreme southern Canada)^1,3. Populations of subspecies cubanensis on Cuba and the Isle of Pines may be natural, but many introduced populations exist across the world^1,3,4. It has suffered a steady, long-term decline in most states in the USA^1,2, with the exception of Texas¹. Declines are greatest in the south-east^1,3. Mexican populations are poorly known and some subspecies could be threatened³.
Countries:	Native: Canada; Cuba; Guatemala; Mexico; United States Regionally extinct: New Zealand; Virgin Islands, U.S. Introduced: Bahamas; China; Dominican Republic; France; Haiti; Italy; Portugal; Puerto Rico; Turks and Caicos Islands
Range Map:	(click map to view full version)

Population [top]

Population:	Rich et al. (2004)
Population Trend:	Decreasing

Habitat and Ecology [top]

Habitat and Ecology:	It is found in early successional vegetation in a variety of habitats, created by disturbances from fire, agriculture and timber-harvesting¹. It is principally a seed feeder but insects form an important component of the diet in summer³. It forms coveys of 8-20 birds occupying a home range of approximately 10 ha.
Systems:	Terrestrial

Threats [top]

Major Threat(s):	Changes in agricultural land use (weed removal and herbicide use), forestry (high-density pine plantations), and lack of use of prescribed fire have resulted in widespread habitat fragmentation¹. Over 20,000,000 individuals were recently being killed annually by hunters in the USA³; poor management of populations could result in declines.

Major Threat(s):

Changes in agricultural land use (weed removal and herbicide use), forestry (high-density pine plantations), and lack of use of prescribed fire have resulted in widespread habitat fragmentation¹. Over 20,000,000 individuals were recently being killed annually by hunters in the USA³; poor management of populations could result in declines.

Conservation Actions [top]

Conservation Actions:	Conservation actions underway: Subspecies ridgwayi is on CITES Appendix I³. Restoration efforts are attempting to conserve this population in Arizona³. Conservation actions proposed: Frequent vegetation disturbance (every 1-5 yr) from prescribed fire and/or mechanical disturbances is essential for maintaining abundant populations in forest habitats. Maintaining tree canopy cover at <50% to create open, parklike conditions is essential. Burn 50-75% of understory vegetation annually during late winter to early summer, in small, patchy mosaics. Research needs to be done in order to understand how to mitigate potential additive effects of hunting mortality (e.g. experiments that examine population productivity and recovery at various harvest regimes and densities). Optimal timing of prescribed fire for habitat management needs to be determined from field research and experimentation. Removal and reduction of mammalian predators during nesting may be useful if also conducted within the context of intensive habitat management. Improve understanding of the Mexican populations.

Conservation Actions:

Conservation actions underway:

Subspecies ridgwayi is on CITES Appendix I³. Restoration efforts are attempting to conserve this population in Arizona³.

Conservation actions proposed:

Frequent vegetation disturbance (every 1-5 yr) from prescribed fire and/or mechanical disturbances is essential for maintaining abundant populations in forest habitats. Maintaining tree canopy cover at <50% to create open, parklike conditions is essential. Burn 50-75% of understory vegetation annually during late winter to early summer, in small, patchy mosaics. Research needs to be done in order to understand how to mitigate potential additive effects of hunting mortality (e.g. experiments that examine population productivity and recovery at various harvest regimes and densities). Optimal timing of prescribed fire for habitat management needs to be determined from field research and experimentation. Removal and reduction of mammalian predators during nesting may be useful if also conducted within the context of intensive habitat management. Improve understanding of the Mexican populations.

Citation:	BirdLife International 2008. Colinus virginianus. In: IUCN 2009. IUCN Red List of Threatened Species. Version 2009.2. <www.iucnredlist.org>. Downloaded on 09 February 2010.
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