They're always looking for food, and always a picture opportunity. Anything that's on the move or pointing in a direction needs much more space in front of it than behind. A viewers eyes tend to follow the direction of travel or gaze, which immediately takes them out of the picture. Generally the space ratio is 2/3rds space towards the direction of travel and 1/3rd behind the subject material. It's not always possible with grab shots to get the recommended ratio, but even a slightly greater space in front is improvement.

You quack me up, lol. They are adorable and great shot. It would be cooler if you could extend the front to have more room for their travel. You can use this link to extend any part of your image Click Here. I've used it and it works

Beautiful and interesting shot. I love the ducks.