Prompt
"Generate an image of a serene and picturesque river flowing through a lush green landscape, with a few birds flying overhead, including a kingfisher and a water vole on the riverbank. In the background, a nature reserve with trees and grasslands can be seen. The river, approximately 3 km long, flows gently into a larger river. Depict the River Purwell in Hertfordshire, England, in a realistic style, showcasing its tranquil atmosphere and rich wildlife, including brown trout."