Alcidae (auks, murres) 
                              Burhinidae (thick-knees) 
                            Charadriidae (plovers) 
                            Chionidae (sheathbills) 
                            Dromadidae (crab plover) 
                            Glareolidae (pratincoles, coursers) 
                            Haematopodidae (oystercatchers) 
                            Ibidorhynchidae (ibisbill) 
                            Jacanidae (jacanas)  
                      | 
                        Laridae (gulls, terns) 
                        Pedionomidae (plains wanderer) 
                        Pluvianellidae (Magellanic plover) 
                            Recurvirostridae (avocet, stilts) 
                            Rostratulidae (painted snipe) 
                            Rynchopidae (skimmers) 
                            Scolopacidae (sandpipers) 
                             Stercorariidae (skuas)  
                            Thinocoridae (seedsnipes) 
                        Turnicidae (buttonquails)   |