My first thought was duck, goose, or pheasant, but as I got closer I could clearly see the wattle. It was a mother wild turkey with a brood of chicks. That's the first we've ever seen a wild turkey in a park, so it was amazing enough to see one, but even more amazing to see one with babies.
This picture isn't the ones we saw (unfortunately, we didn't have a camera with us), but they looked like this:


