I'm pretty sure the Carolina wrens have built a nest in the Pilea microphylla (artillery fern). This one has a spread of about 36" in diameter and I saw a wren carrying a live insect into the ball of foliage. I can't see any sign of entry and I can't see the nest. This is a better choice for me than some other plants because they aren't going to do much damage. I can only hope the rat snakes don't find the wren home!
