two common sandpipers wading in the sea

actitis arenaria bartramia beach beak bird body calidris coenocorypha common curlew feathers foraging gallinago intertidal legs limnodromus limosa lymnocryptes marine mexico nature numenius people phalaropus prosobonia sandpiper scolopacidae scolopax sea shorebirds small snipe tringa waders wading wild wildlife xenus