LOL. Welcome to BYC!
That is certainly enough for one duckling/grown duck. Did you buy only the one?
I caution you about overbuilding your coop/pen/run. Realizing that it's way to much for one duck will cause you to get more ducks.
I caution you about underbuilding your coop/pen/run. Realizing it's not big enough for all the other ducks you're going to get will cause you to spend more replacing or expanding it.
Yes, you will get more ducks. Accept the reality from the beginning, and it will be much easier the day you walk out into your yard and wonder how you came to have so many ducks. They are so lovable that it can be very difficult to stop adding, and each one has its own little personality. They can be very habit-forming.
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