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The Little Bustard is suffering a widespread population decline mainly due to agricultural intensification. This study evaluates the effects of intensification level, habitat availability and rainfall on the population dynamics of this species. The population density of males was monitored for 7 years (2002–2008) at 184 points located within three sites with contrasting levels of agricultural intensification...
Areas of occurrence, population trends and extinction patterns for great bustard Otis tarda populations in Portugal are described for a 22-year period (1980–2002). The major population trends were a large decline in the 1984–1995 period, followed by a fast post-1995 increase. Most of this variation was explained by the trend observed in a single site, Castro Verde, where population has been increasing,...
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