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Distribution and conservation status of Hylorchilus wrens (Troglodytidae) in Mexico

Published online by Cambridge University Press:  11 May 2010

Hector Gomez de Silva
Affiliation:
Instituto de Ecología, UNAMApartado Postal 70–275Ciudad UniversitariaC.P. 04510 México, D.F.Mexico
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Summary

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The two species of Hylorchilus wrens are endemic to Mexico and were considered “Vulnerable” by Collar et al. (1994). They are restricted to humid tropical forest growing over karstic terrain, but large areas of apparently suitable habitat exist where they have not yet been recorded. I explored areas of potentially suitable habitat as well as a few localities where they were already known to occur in order to gather new data for a re-evaluation of the conservation status of these species. My records, together with six localities where these species have been reported by others in the past few years, add 15 localities to the 12 listed by Collar et al. (1992). Based on this and other new information, I recommend “Endangered” status for Nava's Wren, H. navai, based on criterion B of Mace-Lande (extent of occurence <5000 km2) and on the strongly fragmented state of its habitat. I would retain “Vulnerable” status for Sumichrast's Wren, H. sumichrasti, owing to its slightly larger range which is still relatively unfragmented and its apparently larger population density

Type
Research Article
Copyright
Copyright © Birdlife International 1997

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