Common Sandpiper Wader Bird Standing Behind Stone Shaking Head and Lower Body Up and Down

common sandpiper behavior up down shake head slow movement body actitis hypoleucos sandpiper common behind greyishbrown white underparts bill asia malaysia waterfall water rock stone one forage ground freshwater shallow pick up wader adult nature animal ornithology beak feather searching wild wildlife aquatic avian motion plumage closeup waterfowl looking series stand nods curious