In addition to the strategic plantings to encourage some wild neighbors to move in (or at least eat) in my yard, I put up a couple of nest boxes. There was a pretty big House Wren Smack-down (WWF style) right away. The winner started building within days. House Wrens can be jerks, and they are certainly vocal. This pair has actually been pretty good. They are certainly around quite a bit, but actually keep mostly to themselves. If any other birds get near their nest box, they defend it, but there haven't been many altercations.