Ключевые слова: america, baylands, birds, ca, california, calm, clouds, cloudy, colorful, dapple, day, delta, ducks, evening, lake, lands, landscape, light, llano seco, marsh, migration, national, nature, nwr, ponds, protected, public, reflected, reflection, refuge, restoration, sacramento, sacramento national wildlife refuge, scenery, slough, sunset, surface, trees, twilight, unit, united states, usa, valley, vegetation, water, waterfowl, wet, wetlands, wildlife, winter,