The Common Nighthawk’s erratic, acrobatic flight style gives the bird its folk name “bullbat.” But the nighthawk is a bird, not a mammal. On long, pointed wings, this dusky hunter jerks and weaves through the air, flashing distinctive white wing patches. Unfortunately, in recent decades, the nighthawk has become a less familiar sight in many parts of town-and-country North America. Nighthawks usually spend their days hidden, sometimes in plain view, thanks to their cryptic gray, brown, and black