Mike Kilburn & I saw the following HK leg-flagged waders in front of the Mai Po boardwalk today (5 Sep 2010):
Marsh Sandpiper A3, A8
Greenshank A4
Common Redshank A7, A9, A10, B9, B10.
We also saw a Curlew Sandpiper, which was moulting out of breeding plumage, with an orange flag on its right leg.