#podicipitiform_seabird  aquatic birds related to the loons
  supertype:  #seabird__sea_bird__seabird__seafowl  a bird that frequents coastal waters and the open ocean: gulls; pelicans; gannets; cormorants; albatrosses; petrels; etc.
  member of:  #order_Podicipitiformes
  subtype:  #grebe  small compact-bodied almost completely aquatic bird that builds floating nests; similar to loons but smaller and with lobate rather than webbed feet
     subtype:  #great_crested_grebe__greatcrestedgrebe__Podiceps_cristatus  large Old World grebe with black ear tufts
     subtype:  #red-necked_grebe__Podiceps_grisegena  large stocky grebe of circumpolar regions having a dark neck
     subtype:  #black-necked_grebe__eared_grebe__Podiceps_nigricollis  small grebe with yellow ear tufts and a black neck; found in Eurasia and southern Africa as well as western United States
     subtype:  #dabchick__little_grebe__Podiceps_ruficollis  small European grebe
     subtype:  #pied-billed_grebe__Podilymbus_podiceps  American grebe having a black-banded whitish bill

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