Joint Publication 5-0, Joint Operation Planning, reflects current guidance for planning. military operations and, as a keystone publicatio n, forms the core of joint doctrine for joint. operation planning throughout the range of military operations.
Food Habits. Elf owls primarily eat insects â especially moths, beetles, and crickets â but occasionally they eat small mammals and reptiles, like spiny lizards, earless lizards, blind snakes and kangaroo rats. In southeastern Arizona, elf owls change their diet based on the weather.
These birds wait on a high perch at night and swoop down on prey. They mainly eat small organisms with a focus on small mammals in their diet. A test done by Swengel and Swengel found that the northern saw-whet owls most often eat deer mice, 67% and voles, 16% of the time in Wisconsin. A similar test done by Holt and Leroux in Montana found that these owls ate more voles than other mammal species.