Biodiversity and Conservation

, Volume 16, Issue 4, pp 1055–1061 | Cite as

Territoriality and Survivorship of the Sierra Madre Sparrow in La Cima, México

  • Adán Oliveras de Ita
  • Héctor Gómez de Silva
ORIGINAL PAPER

Abstract

We studied the life-history of the Sierra Madre sparrow (Xenospiza baileyi) in a subalpine grassland-agriculture mosaic south of Mexico City. From March to early September 1999 we captured and color-banded 53 adults with mist-nets and mapped the breeding territories of 21 males. We again mapped territories in the same spot in April and May 2000. The number of breeding territories was found to be the same in the two consecutive years and interannual survivorship was found to be relatively high. Breeding territories were restricted to the bunchgrass-covered areas. We used the density of territories and the amount of remaining habitat to estimate a total population size of 5,380–6,150 adults for this species. Using this and other recent data, we recommend raising the Sierra Madre sparrow to the status of critically endangered using BirdLife International criteria.

Keywords

Mexico Restricted range Critically endangered Sierra Madre sparrow Survivorship Territoriality Xenospiza baileyi 

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Copyright information

© Springer Science+Business Media B.V. 2006

Authors and Affiliations

  • Adán Oliveras de Ita
    • 1
    • 2
    • 3
  • Héctor Gómez de Silva
    • 1
  1. 1.Instituto de EcologíaUNAM, Ciudad UniversitariaMéxicoD.F. México
  2. 2.Centro de Investigaciones en Ecosistemas (CIECO)UNAMMorelia, MichoacánMéxico
  3. 3.Instituto de EcologíaMéxicoD.F.México

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