I also find it fascinating that many owls have evolved silent flight to avoid giving themselves away to prey with good hearing, even if the lack of preen-oil re

I also find it fascinating that many owls have evolved silent flight to avoid giving themselves away to prey with good hearing, even if the lack of preen-oil required makes them vulnerable to waterlogging in wet weather. (Thank you for introducing me to the Laughing Owl, although I was saddened to read that it's now extinct)