A group of Western Sandpipers are alarmed by a hunting Harrier Falcon, and take to the air to escape capture. Brunswick Point, Ladner, BC, Canada

Every spring, from mid April until early May, hundreds of thousands of shorebirds pause on the mudflats of the Fraser Delta and Boundary Bay to feed during their migration between wintering grounds in central America and their breeding grounds in Alaska. Of the many species that use the area, the Western Sandpiper and Dunlin are the most numerous. At peak times, flocks of more that 100,000 birds cover the mudflats or fly in undulating clouds over the foreshore. A BC Ferry sails past from the Tsawwassen Terminal.

Every spring, from mid April until early May, hundreds of thousands of shorebirds pause on the mudflats of the Fraser Delta and Boundary Bay to feed during their migration between wintering grounds in central America and their breeding grounds in Alaska. Of the many species that use the area, the Western Sandpiper and Dunlin are the most numerous. At peak times, flocks of more that 100,000 birds cover the mudflats or fly in undulating clouds over the foreshore