California Spotted Owls eat mostly small and medium sized rodents, with the other portion of their diet being made up of smaller owls, songbirds, amphibians, and some insects. Great Horned Owls and Bald Eagles are common predators of the spotted owl. Spotted Owls have varying nest types depending on their available habitat. They prefer nesting in hardwood tree cavities with thick canopy, but will also settle for holes in steep canyon walls. Nests may consist of one to four young that are altricial, and pairs may not mate every year. These owls will mate for life in monogamous breeding pairs. Young will rely on the parents for guidance and support for two to three months after leaving the nest. They are swift and solitary hunters.