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The distribution and status of Worthen's Sparrow Spizella wortheni: a review

Published online by Cambridge University Press:  11 May 2010

David C. Wege ,
Steve N. G. Howell  and
Andrés M. Sada
David C. Wege
Affiliation:
BirdLife International, Wellbrook Court, Girton Road, Cambridge CB7 0NA, U.K.
Steve N. G. Howell
Affiliation:
Point Reyes Bird Observatory, 4990 Shoreline Highway, Stinson Beach, California 94970, U.S.A.
Andrés M. Sada
Affiliation:
Apdo Postal 1124, Monterrey, N.L. 64000, Mexico
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Summary

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Originally described last century from New Mexico, U.S.A., Worthen's Sparrow Spizella wortheni has subsequently been recorded from just eight states in Mexico centred on the interior of the north-east of the country. Records during the last 30 years originate from just Coahuila and Nuevo León, with those during the last 10 years exclusively from two small areas in south-eastern Coahuila and western Nuevo León: it appears that this poorly known species has been suffering a range contraction owing to the widespread destruction of its shrubby (mesquite or yucca-juniper) grassland habitat. Little detail is known of its specific requirements, local movements, or even its distribution, and it is proposed that Worthen's Sparrow be formally recognized as a threatened species.

Originalmente descrito el siglo pasado a partir de ejemplares procedentes de Nuevo Méjico, U.S.A., Spizella wortheni ha sido posteriormente citado en ocho estados mejicanos, todos en el interior del noreste del país. Durante los últimos 30 años, todas las citas provienen de Coahuila y Nuevo León, y durante los últimos 10 exclusivamente de dos pequeñas áreas del sureste de Coahuila y del oeste de Nuevo León: parece que el área de distribution de esta escasamente conocida especie ha ido reduciéndose debido a una generalizada destructión de su hábitat de matorral (mescal o yuca-enebro) pastizal. Se conoce muy poco de sus requerimientos específicos, movimientos locales, o incluso su distributión, y se propone que Spizella wortheni sea formalmente reconocido como una especie amenazada.

Type
Research Article
Information
Bird Conservation International , Volume 3 , Issue 3 , September 1993 , pp. 211 - 220
Copyright
Copyright © Birdlife International 1993

References

AOU (American Ornithologists' Union) (1983) Check-list of North American birds. Sixth edition. American Ornithologists' Union.Google Scholar
Burleigh, T. D. and Lowery, G. H. (1942) Notes on the birds of southeastern Coahuila. Occas. Pap. Mus. Zool. Louisiana State Univ. 12: 185–212.Google Scholar
Ceballos, G., Mellink, E. and Hanebury, L. R. (1993) Distribution and conservation status of prairie dogs Cynomys mexicanus and Cynomys ludovicianus in Mexico. Biol. Conserv. 63: 105–112.CrossRefGoogle Scholar
Collar, N. J., Gonzaga, L. P., Krabbe, N., Madrono Nieto, A., Naranjo, L. G., Parker, T. A. and Wege, D. C. (1992) Threatened birds of the Americas: the ICBP/IUCN Red Data Book. Cambridge, U.K.: International Council for Bird Preservation.Google Scholar
Deignan, H. G. (1961) Type specimens of birds in the United States National Museum. Bull. U.S. Natn. Mus. 221.Google Scholar
Howell, S. N. G. and Webb, S. (in press) A guide to the birds of Mexico and northern Central America. Oxford: Oxford University Press.Google Scholar
Lowery, G. H. and Dalquest, W. W. (1951) Birds from the state of Veracruz, Mexico. Univ. Kansas Publ. Mus. Nat. Hist. 3(4): 531–649.Google Scholar
Miller, A. H., Friedmann, H., Griscom, L. and Moore, R. T. (1957) Distributional checklist of the birds of Mexico, 2. Cooper Ornithological Society (Pacific Coast Avifauna 33).Google Scholar
OG (Office of Geography) (1956) Mexico: official standard names approved by the U.S. Board on Geographic Names. Washington, D.C.: Department of the Interior.Google Scholar
Ridgway, R. (1901) The birds of North and Middle America. Bull. U.S. Natn. Mus. 50(1).Google Scholar
Sada, A. M. (1987) Locations for finding Worthen's Sparrow (Spizella wortheni) in Nuevo León [Coahuila]. MBA Bulletin Board 1(87-3): 2.Google Scholar
TAW (1986) The Times atlas of the world. Comprehensive (seventh) edition with revisions. London: Times Books.Google Scholar
Thayer, J. E. (1925) The nesting of the Worthen [sic] Sparrow in Tamaulipas, Mexico. Condor 27: 34.CrossRefGoogle Scholar
Webster, J. D. (1954) Breeding bird census: mesquite grassland with scattered junipers. Audubon Field Notes 8: 376–377.Google Scholar
Webster, J. D. (1958) Further ornithological notes from Zacatecas, Mexico. Wilson Bull. 70: 243–256.Google Scholar
Webster, J. D. and Orr, R. T. (1954) Summering birds of Zacatecas, Mexico, with a description of a new race of Worthen [sic] Sparrow. Condor 56: 155–160.Google Scholar