Animal, Waterfowl, Heron, Ardeidae, Stork, Crane Bird, Anhinga, USA, wildlife, refuge, national, bird, birds, birdwatching, travel, tourism, vacation, fall, autumn, ornithology, wild, animal, animals, reflections, resting, Texas, Big Bend National Park, outdoor, outdoors, nature, natural, wading birds, North, America, close-up, portrait, feather, beak, heron, Great Blue Heron, canal, fence, wetland, park, reflection, pond, water, plumage, lake, fauna, wings, duct, united states, american state, life science, achiever, wading bird, zoology, time off, subject, discipline, district, implementation, fencing, state, passage, outside, United States of America, safety, holiday, texas, biology, north, statement, barrier, means, season, U.S., United States, leisure, mouth, pool, orifice, photograph, aquatic bird, science, life, person, north american country