While out checking shorebirds on the fall migration at Boundary Bay around 112th Ave. Around the mouth of Oliver's slough on the ocean side of the pump station, there were 5 spotted sandpipers who had already molted out of their spots. They were acting a bit strange as they were hunting flies on the shoreline which had them running from place to place with an outstretched neck. It reminded me of a show on the Salt Lake Brine flies and California Gulls. There is a bit of history here on Oliver Slough and the oyster farms when there was no pump station.