Ключевые слова: america, baylands, ca, california, calm, clouds, cloudscape, colorful, contrast, dapple, dark, delta, ducks, flock, geese, grounds, lake, landscape, light, llano seco, marsh, migrating, migration, national, nature, outdoor, outdoors, park, ponds, protected, refuge, restoration, sacramento, scenery, scenic, sky, sunset, surface, swimming, twilight, unit, united states, usa, valley, water, waterfowl, wetlands, wildlife, winter, wintering,