Love the idea, the art, and the music and sfx!! Absolutely adorable!
I think one big thing that would help is if the level restarted automatically when one duck died, since there's no point continuing then.
I also wish there was a second or so of invincibility when you got another duck since that changes how your flock is arranged and hard to predict how to avoid the bullets in that second or two. I wish there were a few more levels when it was a bit easy before it started getting hard so I can spend more time with my little duck friends!