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Population Survey of the Common BuzzardButeo buteoon Madeira Island (Portugal)

Dorine Yvette Manon Jansen

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Abstract

A survey was conducted on Madeira Island (Portugal) from 9 May to 2 June 2008 to determine population size and distribution of the common buzzard Buteo buteo. Distance sampling on foot was carried out along 87.6 km of transects. The species was present in small numbers in all areas sampled. Population size was estimated at 409 (95% CI 275–608) individuals at a density of 0.55 buzzards/km2 (95% CI 0.37–0.83), based on 39 observations. The present survey sets a baseline for future studies monitoring changes in the common buzzard population on Madeira.

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What this paper is about

A survey was conducted on Madeira Island (Portugal) from 9 May to 2 June 2008 to determine population size and distribution of the common buzzard Buteo buteo. Distance sampling on foot was carried out along 87.6 km of transects. The species was present in small numbers in all areas sampled. Population size was estimated at 409 (95% CI 275–608) individuals at a density of 0.55 buzzards/km2 (95% CI 0.37–0.83), based on 39 observations. The present survey sets a baseline for future studies monitoring changes in the common buzzard population on Madeira.

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Available abstract

A survey was conducted on Madeira Island (Portugal) from 9 May to 2 June 2008 to determine population size and distribution of the common buzzard Buteo buteo. Distance sampling on foot was carried out along 87.6 km of transects. The species was present in small numbers in all areas sampled. Population size was estimated at 409 (95% CI 275–608) individuals at a density of 0.55 buzzards/km2 (95% CI 0.37–0.83), based on 39 observations. The present survey sets a baseline for future studies monitoring changes in the common buzzard population on Madeira.

Key concepts: Buzzard, Transect, Buteo, Geography, Population, Distance sampling, Population size, Zoology

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