The Western sandpiper eats crustaceans, marine worms, small mollusks, and insects. The male also sings to attract a mate.
During migration, Western sandpipers gather in flocks of hundreds of birds.
The Wilson's snipe (photo) eats larval insects, worms, crustaceans, mollusks, vegetation and seeds,
while the piping plover eats insects, invertebrates, and crustaceans.
Despite their name, black oystercatchers do not eat oysters. Their diet includes mollusks, crabs, and sea urchins.
American avocets are short-distance migrators. They eat insects, crustaceans, worms, and small fish.