My wife is an avid birder (also a professional biologist).
It is my understanding (which is admittedly completely second-hand) that feathers simply do not 'ruff off' especially in the winter time. Many owls start breeding at this time of year. There are a surprising number of nest sites within city limits. There have been many strong north and west winds over the last couple of days. Since owls (and other birds of prey, like a sharp-shinned hawk) will just roost somewhere and pluck off some feathers before eating, it is very likely there is a nest site relatively close by.
it is kind of a crappy picture, but this hawk was sitting in my back yard only 4m away, but he was sitting under a massive group of cedar waxwings (which is what I would guess the bird your feathers are from) in the mountain ash right beside the tree he was sitting in. https://photos.app.goo.gl/tIRSSxtVIdIW8wEG3
My wife picks me up feathers all the time. My personal favorites are Canada goose and swan flight feathers---biots for stoneflies, copper johns, and prince nymphs. They also tend to be part of the 'non-edible' group, so they are easy to salvage.
Post a picture of your find. Collectively, we can probably figure out what it is.