These monsters are described as oversized adean condors with black feathers, and a white collar around it's neck. In fact, millions of years ago, giant birds called Terratorns existed. Also, Native American legends describe giagantic birds big enough to carry humans. In fact, one report claims one of these birds actully carried a small boy around 40 feet. However, experts say the estimates of these birds (15 to 24 feet in wingspan) is exagherated. However, one man saw a giant bird perched on a telephone pole and made a reasonable estimate.