The clip explains the importance of facial disks, but also something else I'd never considered.
I always just assumed all hunters try to be quiet so not to alarm their prey. But that clip suggests yet another reason for the special feathering on the leading edge of an owl's wing. When sound is so important, so is the lack of it!
Thanks again, Owlman!
Brown Creeper, Blue Jay, Red-tailed Hawk-Dark Morph, Sharp-shinned Hawk, Song Sparrow, Common Raven, American Crow, Gray-crowned Rosy-Finch, Brown-capped Rosy-Finch, Black Rosy-Finch, Evening Grosbeak, White-winged Dove, Lesser Goldfinch, American Goldfinch, White-breasted Nuthatch, Pine Siskin, Mountain Chickadee, Hairy Woodpecker, Black-capped Chickadee, Dark-eyed Junco, Red-winged Blackbird, House Finch, Common Grackle, Northern Flicker - Red-shafted, Downy Woodpecker, Black-billed Magpie, European Starling, House Sparrow, Eurasian Collared-Dove