- The Green Heron (Butorides Virescens) is a small, stocky, and elusive wading bird recognizable by its deep iridescent green back, chestnut-brown neck, and dagger-like bill - In Southern Arizona, they are primarily summer breeders but are increasingly spotted as permanent residents in local urban ponds and wetlands. - Small for a heron—about the size of a crow ... from a distance, they look dark, but in the sun, they reveal a deep green back, dark chestnut neck, and yellow legs ... juveniles are browner with pale streaking - Good places to see Green Herons around Tucson are at Sweetwater Wetlands, Agua Caliente Park, Reid Park, and Columbus Park