The downward-directed illumination is really all that is needed to address the issue effectively. I think the IDA has been pushing this for years. There was a “discussion” (really insult string) on this a few years ago on FR. Everyone said things like, you’re trying to ban outdoor lighting. No, just direct it (downward) where it is needed.
Yeah, but if it’s directed downward, I can’t see the *@&!! owls before they attack me!