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59     owls
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This Pacific screech owl, Otus cooperi (Strigidae) is a primary predator on Liomys salvini in the ACG dry forest. This small owl, about 18 cm tall, can live as an adult on many species of small vertebrates and insects, but seems to nest primarily when there is a population peak of Liomys. As many as 10 Liomys may be delivered to a nest in one night. If they could catch all the mice, just two adults of this owl could consume the entire yearly production of Liomys mice from one of the 4.5 hectare sample plots in image DHJanzen100571.jpg above, just to maintain their own food needs, to say nothing of raising a nest of owlets.
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