#tern  small slender gull having narrow wings and a forked tail
  supertype:  #larid  long-winged web-footed aquatic bird of the gull family
  member of:  #subfamily_Sterninae
  subtype:  #sea_swallow__seaswallow__Sterna_hirundo  common tern of Eurasia and America having white black and gray plumage

No statement uses or specializes #tern; click here to add one.