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Population trends and status of the Madeira Laurel Pigeon Columba trocaz

Published online by Cambridge University Press:  11 May 2010

Paulo Oliveira ,
Martin Jones ,
Donato Caires  and
Dilia Menezes
Paulo Oliveira
Affiliation:
Parque Natural da Madeira, Quinta do Bom Sucesso, Caminho do Meio, 9050 Madeira, Portugal.
Martin Jones
Affiliation:
Manchester Metropolitan University, John Dalton Building, Chester Street, Manchester Mi 5GD, U.K.
Donato Caires
Affiliation:
Rua do Agrela No. 10. 9050 Madeira, Portugal.
Dilia Menezes
Affiliation:
Parque Natural da Madeira, Quinta do Bom Sucesso, Caminho do Meio, 9050 Madeira, Portugal.
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Summary

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A survey was undertaken in 1995 to assess the conservation status of the Madeira Laurel Pigeon Columba trocaz, a threatened species endemic to the Island of Madeira. The first large scale survey was carried out 1986, following the cessation of legal hunting of the species, to provide a baseline for future monitoring of population changes. The current study therefore aims to (1) compare population size with those of 1986 and (2) employ distance sampling methods (not used in 1986) to obtain estimates of population density and size. Eighteen transects (13 repeated from the 1986 survey and five new) were conducted in the four main areas of laurel forest. Pigeon numbers had increased on nearly all transects but some of the highest increases, proportionately and often numerically, were in areas with lower numbers in 1986. We estimate the current population to be 10,400 individuals, a considerable increase since 1986, probably due to a ban on hunting. As laurel forest habitat is now very well protected the Madeira Laurel Pigeon is relatively safe from extinction.

Information

Type
Research Article
Information
Bird Conservation International , Volume 9 , Issue 4 , December 1999 , pp. 387 - 395
Copyright
Copyright © Birdlife International 1999

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