Little Grebe, Tachybaptus ruficollis

Little Grebe, 12/31/09, Clissold Park, London, UK
I was told by a local birder that there was a Little Grebe in the west pond in Clissold Park, but for most of our two weeks in London the pond was frozen over, and the bird didn't appear. A thaw brought the bird out, and I got this photo on our last day in London.