Ключевые слова: air, animal, animals, beautiful, bird, bird flu, bird protection, blue, environment, evening, feather, flight, flock, flock of birds, fly, free, freedom, group, gulls, marine environment, nature, nature reserve, north sea, outdoor, sea, sea bird, seagull, seagulls, silhouette, sky, soaring, swarm, water birds, white, wildlife,