Alan Murphy/ BIA / Killdeer (Charadrius vociferus) in broken wing display, Texas

Sebastian Kennerknecht / Snowy Plover (Charadrius nivosus) biologist, Ben Pearl, picking up chick from mud flat in salt pond, Eden Landing Ecological Reserve, Union City, Bay Area, California

Greg Oakley/ BIA / Red-capped Plover (Charadrius ruficapillus) on beach, New South Wales, Australia

Michael Milicia/ BIA / Piping Plover (Charadrius melodus) in broken wing display, Massachusetts

Michael Milicia/ BIA / Piping Plover (Charadrius melodus) stretching, Massachusetts

Michael Milicia/ BIA / Piping Plover (Charadrius melodus) with chick, Massachusetts

David Williams / Mongolian Plover (Charadrius mongolus) running, Thailand

Sebastian Kennerknecht / Snowy Plover (Charadrius nivosus) in winter plumage on beach, Point Reyes National Seashore, California

Tom Vezo / Piping Plover (Charadrius melodus) sitting on eggs in nest on ground, Long Island, New York

Konrad Wothe / Kentish Plover (Charadrius alexandrinus) male at nest, Europe

Tim Fitzharris / Killdeer (Charadrius vociferus) parent displaying while trying to distract predator from nest, North America

Agustin Esmoris / Two-banded Plover (Charadrius falklandicus) on nest, Chubut, Argentina