MAMÍFEROS PEQUEÑOS EN LA DIETA DE LA LECHUZA TYTO ALBA (STRIGIFORMES: TYTONIDAE) EN DOS LOCALIDADES DEL OCCIDENTE DE ECUADOR, CON AMPLIACIÓN DISTRIBUCIONAL DE ICHTHYOMYS HYDROBATES (RODENTIA: CRICETIDAE)

We analyzed 107 owl pellets and determined 300 prey items grouped into 21 species. The pellets were collected at two locations with different environments: Los Santiagos and La Ciénaga in the province of Chimborazo and Manabí in western Ecuador. Our analysis revealed a diet mostly comprised on small mammals, especially rodents which constituted 80%. Among the most abundant prey were Oligoryzomys sp. which accounted for 38.7% of the diet in Los Santiagos' samples and Sigmodon peruanus 33.6% in La Ciénaga, being 22.5% and 41% respectively of the total biomass consumed at each site. The crab-e...

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