flock of cattle egrets flying at sunset in doñana national park, spain

andalusia biodiversity birds doaplusmn ana national park european wildlife natural beauty peaceful spain birdwatching cattle egrets cloudy sky ecology environment evening flock flying golden hour habitat horizon landscape lucio del lobo marsh heritage nature open air orange ornamental ornithology outdoors pristine reflections scenic seasonal migration serne wetlands skyscape sunlight sunset glow sustainable tourism tranquility twilight wildlands