House Sparrow Condos

Did you ever look up at the metal poles that are used to suspend New York City's traffic lights over the intersection? Just about every one of these houses at least one House Sparrow nest. In fact, an informal survey this spring failed to find a single pole without a nest. The openings, blocked by threaded cross bolts are the perfect size for House Sparrows. The pipes that form the metal tees are pierced with threaded rods that narrow the opening so that only a House Sparrow can fit inside.