Ключевые слова: adult, alert, animal, aquatic, background, beak, behavior, bird, birdwatching, blue, catching, closeup, colorful, detail, eating, environment, feeding, fish, fishing, food, great blue heron, heron, hungry, hunt, marsh, mouth, nature, ornithology, outdoors, patience, predator, selective focus, spear, splash, spring, stalk, standing, strike, success, sunny, survival, swallow, swamp, wading, water, waterbird, waterfowl, wetland, wild, wildlife,