The Short-eared Owls of the temperate and arctic Northern Hemisphere are highly migratory and often make substantial cross-water flights. They are the owls seen most often from ships at sea. They also have established more sedentary populations on numerous subtropical and tropical islands, including Hawaii, The Galapagos, the Greater Antilles, and Ponape.
The only other northern-hemisphere owl that regularly and successfully takes long cross-water flights is the Snowy Owl.
I don't know about barred owls. But I have seen two or more short-eared owls that seemed quite comfortable 20 miles offshore. 1 actually turned and flew into the boat wake for a short period. From this distance they could undoubtedly make out the shoreline if they are interested in returning to land. I've always assumed that they simply migrate offshore at times including during the day. Bob O'Brien Carver Oregon
On Monday, October 28, 2019, Mike Patterson < [ mailto:<celata...> | <celata...> ] > wrote:
According to the COASST database, 57 Barred Owls have turned up on surveys. I've found 4 or 5 (I have photos).
Barred Owls are very movious, especially this time of year when youngsters are dispersing. I'm guessing a certain fraction end up flying out over the ocean, become exhausted and crash...
Short-eared Owls have been known to turn up out at sea as well.