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33-45cm (13-17Â¾ in); females larger
 Ciccaba vs. Strix
Some authorities (Sibley & Monroe, 1996; IOC 5.3, 2015) retain Mottled Owl (virgata), Black-and-white Owl (nigrolineata), Black-banded Owl (huhula), and Rufous-banded Owl (albitarsis) in the genus Strix. KÃ¶nig et al. state that the general morphology and phylogenetic evidence of these four species does not indicate separation from the rest of Strix, and Restall goes on to explain that they were originally separated into the genus Ciccaba based on anatomy of the external ear. Clements (2015) and Howard & Moore (2014) do recognize all four species as being in Ciccaba and the Opus follows.
Lowlands to mid elevation, mostly wet forests including mangrove but also borders and urban parks. Observed at heights up to ca. 2,000 m (6,560 ft) elevation.
Nocturnal; spends the day high in dense vegetation.
They nest mostly in natural holes in stumps and trees, but may also use old nests of squirrels, hawks or crows or place eggs within epiphytes. The 1 or 2 eggs are white.
The diet includes primarily insects and small mammals including bats. Several locations have lamps that attract insect and are regularly visited by this species of owl, known examples range from Costa Rica to Ecuador (at least).
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