I was surprised at the news that a year-old penguin ran (I don't think it is an appropriate word, though) away from an aquarium in Tokyo and some people saw him/her swimming in the nearby river.
That reminds me of the news that a penguin in Nagasaki Penguin Aquarium was kidnapped some years ago and the suspect was arrested. The suspect was going to take the bird into a big bag and sell it.
How could a young penguin get out of the aquarium? As a great fan of "The Penguins from Madagascar", I can imagine four penguins of the Special Forces offered the missing their soda jet (a plastic bottle of soda carried on the shoulder, and big wings to wear .)secretly to fly in the sky.
I hope the penguin will be found soon.