2 at high tide on the Carew River at West Williamston, about 100m apart. The tide fell rapidly, both were a long way from the main channel, I think both ended up stranded in the still flooded salt marsh.
Update - Wednesday - I found one of yesterday's birds in the long grass and took it to the West Williamston collection point where Jean pronounced it in good health - it will soon be resuming its journey along with the 3 or 4 others she had there.