three-toed sandpiper, calidris alba, winter plumage running free from the ground along the tide line to outrun the waves

calidris alba scolopacidae agility animals autumn avian avifauna beach beak belly feathers bird birdwatching black feet fall fast runner foam foraging grains sand grey back insects left migrant migratory ground wet ornithology outdoors outrun outside running sharp shells shorebird small snails speed surf three toes threetoed sandpiper tide line waves white winter plumage visitor worms three-toed forage