There is a barn owl that lives by me. I live in Chicago so it’s definately an urban environment and not a place you think you’d see a barn owl.
I noticed him about a year and a half ago, I heard a hoot and after looking I saw him. At first I thought he was one of those fake owls, 'cause he barely moves, but if you watch him he does move.
Anyway he’s still there after a year and a half, so I assume he has found food. The city is full of birds and mice and rats, so that shouldn’t be an issue. It may actually be a different owl for all I know, but I’ve only seen one (at least one at a time) and only heard one set of “hoots.”
I got to thinking he’d be a good form of rodent control and maybe pigeon control (or whatever kind of birds they eat).
But how he got there I don’t know. My question is, could you like buy a bunch of barn owls and put them in your back yard? I know there are probably laws against it but birds being birds, certainly fly into unusual areas and find niches.
Another example is I saw a heron in the Chicago River from last April (2008) to November (2008) when I guess it flew on to warmer places.
Let’s say you had a farm, I guess a barn owl would be good but how would you get them on your farm unless you bought one.