Wrens and other birds who don't mind the cold
Cheryl in Northwest D.C. writes: “A wren has built its nest in a corner of my porch. I don’t mind it being there; I even put something down to catch the droppings. But I’m concerned that there isn’t much shelter in the chosen area, and that as it gets colder the bird will not be able to keep itself warm enough. What can or should I do to help the bird get through the winter?”