The flamingo,s have a fair size pool, in there enclosuer, these mirror,s are in the corner, from Zamber,s pictureyou do not get, a veiw of the actual size of the exhibit.
Indeed, this happens to be one of the few shots when you don't see the large pond that fills the centre of their enclosure. Talk about books and their covers...
But given they like standing on the other side of them I reckon they might be teasing the keepers for a while yet!