Food Biology of Crotophaga sulcirostris “guarda caballo” during the winter season in agricultural areas of the campus of the Universidad Nacional de Trujillo, Peru
Keywords:
Diet, Feeding biology, Guardacaballo, PeruAbstract
The aim has been to provide quantified data to the knowledge of the feeding biology of the "save horse" Groove-billed Ani, publicizing the results on trophic spectrum, niche breadth and index of relative importance. 5 stomachs were analyzed between the months of May-June 2009. The diet consisted of 14 taxa, all of which corresponded to the animal fraction. The values obtained by applying the index of relative importance (IRI) were the following: insects = 4023 (Dermaptera = 19 = 510 dipteran, coleopteran = 2204 = 186 Lepidoptera, Orthoptera = 1105), arachnids = 30, 98 Isopoda. The trophic diversity (H) varied between 1.24 and 1.70. The trophic niche breadth was in winter 0375. Insects constituted the most important food and are the staple diet.
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