I never saw these guys before. According to "The Audubon Society Field Guide to North American Birds," they are fairly common on the east coast. They are fairly small, under 6 inches total length. They are fly catchers and build a neat nest stuck to a light fixture using mud and Moss/grass. I'll get a photo of the nest some day, but here are a few of the bird. This time I was on the tripod fully supported. The Kenko 1.4 was attached. Full sun no flash. EXIF still entact.