Great blue herons are the largest of our herons. Standing over 3 feet tall, with a large, 6-inch-long dagger of a beak, they eat anything they can spear. They are bluish-gray in color. They most often eat fish, but also feed on snakes, mammals, and small birds. Also known as river cranes, great blues range widely across the state of South Carolina, even visiting creeks and ponds in the mountains. With a harsh, loud croak uttered during the day or night, this bird sounds more like a pterodactyl!