Oh yeah, they'd love that. I let mine out dureing the day when I'm home. But always put them up at night. You have to watch large preditors, dogs, and such as they dont fly at all, aside from that, they dont wonder either, so you'd be in good shape as long as you didnt have critter problems.
Let me know if intererested in some. I have about 40 ducklings to get orders for then I could be freed up
Aubrey