Eastport, MD April 10, 2014
All dark below, swallow-shaped bird. I'm not sure what else this could be.
Pre-roost before headed to the big roost at Highland Mall.
The Purple Martin (Progne subis) is the largest North American swallow. These aerial acrobats have speed and agility in flight, and when approaching their housing, will dive from the sky at great speeds with their wings tucked.