There is a thin sheet of ice on geese lake today. There are also geese there (unusually warm weather is confusing the birds). The ice is so thin it is almost invisible. Some of the skinny geese can walk on it, while others break through and swim. I grabbed this video of their antics.
Walking on water
If you watch closely at the end, you'll see one of the geese go for a nice skate. Slapstick, bird style.