AVIAN RESOURCE USE IN DOMINICAN SHADE COFFEE PLANTATIONS

摘要

We quantified foraging behavior of 19 bird species in shade coffee plantations in the Domin- ican Republic to document and evaluate their use of food resources in the shade overstory relative to the coffee understory. All species were observed foraging in the Inga vera overstory, and 18 of the 19 species had median foraging heights significantly above the median maximum coffee height. Eight species (42/100) foraged exclusively in the canopy or subcanopy and not in the coffee understory. No species foraged exclusively in the coffee, although the Narrow-billed Tody (Todus angustirostris) foraged mostly in coffee.