A barn owl roosts in a eucalyptus tree, Apr. 21, 2017, Travis Air Force Base, Calif. These owls make eerie, raspy calls, quite unlike the hoots of other owls. Despite a worldwide distribution, barn owls are declining in parts of their range due to habitat loss. Barn owls hunt by flying low, back and forth over open habitats, searching for small rodents primarily by sound. Barn owls are wonderful natural pest control, vintners have been using barn owls for rodent control for decades, by installing owl boxes amongst the grapevines.(U.S. Air Force photo/ Heide Couch)
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