After work trip out to Chew to look for the Richardsons Canada Goose. Searched Herriotts pool for an hour or so, looking at all the Canadas there. They all gradually disappeared, 2 or 3 at a time until there were only about 2 pairs left. Then out of the blue a birder friend said "Whats that?", looked up to see the Richardsons flying in. It landed at the back of the pool near a Shelduck. Amazingly it is about the same size!!! About ten minutes later it was gone again, flying off around the back of the pool.