caption: The image shows a group of ducks swimming in a body of water, with one of them being a greenwing. The water is still and clear, allowing us to see the ducks' feathers glistening in the sunlight. The greenwing has a distinctive green head and neck, with a white patch on its chest and a white line running down its back. Its wings are spread out as it gracefully glides through the water, creating ripples in its wake.