And I think reasonable reaction to seeing a strange cat in one's kitchen would it to shoo it off, and a reasonable reaction to seeing an owl during a daytime would be to shrug. But perhaps I assume a setting where casters are not that common, and people do not live in constant paranoia about being spied by magical familiars. And if people are that paranoid, then I would expect a massive number of innocent animals getting murdered as suspected familiars. BTW, I saw a small owl during daytime couple of months ago. My reaction was to try to take a picture. Not for a moment I though that seeing it during the daytime was particularly strange, but then again, perhaps it actually was a wizard's familiar and I was just being foolish!