It's funny...you'd think that a bird wouldn't like to drink all that chlorinated water, but perhaps it's a very hygenic fellow and doesn't like the mud puddles? Or maybe it's not treated? At any rate, it makes for a very interesting photo.
"The more we come in contact with animals, and observe their behaviour, the more we love them, for we see how great is their care for their young." - philosopher Immanuel Kant