WM Keck Science
A collection of common barn-owl (Tyto alba Scopoli) pellets from caves on the Portland Ridge of Jamaica reveals that whereas introduced rodents constitute approximately 90% of the total prey, bats and birds are also frequent prey items. Of the bats, frugivorous species predominate with Ariteus flavescens Gray and Artibeus jamaicensis Leach accounting for the largest portion of the bat prey. Insectivorous bats are markedly under-represented with respect to the known diversity of insectivorous species in the habitat.
MacFarlane, D.A., and K. L. Garret. "The prey of common barn owls (Tyto alba) in dry limestone scrub forest of southern Jamaica." Caribbean Journal of Science 25 (1989): 21-23.