Dan, liked the exposure and the sharpness. I'd have preferred it alone. Its not always easy to isolate goslings, ducklings and cygnets.If possible, lower angle would have been better...esp. if you had the green grass in the BG...we can see hint of it at the top.
Nice and sharp on the main subject and I actually don't mind the extra birds. One leaving the frame and one entering it, sort of frames the middle bird nicely