#vireo  any of various small insectivorous American birds chiefly olive-gray in color
  supertype:  #oscine_bird__oscine  passerine bird having specialized vocal apparatus
  member of:  #genus_Vireo
  subtype:  #red-eyed_vireo__Vireo_olivaceous  of northern North America having red irises and a olive-gray body with white underparts
  subtype:  #solitary_vireo__Vireo_solitarius  of eastern North America having a bluish-gray head and mostly green body
  subtype:  #blue-headed_vireo__Vireo_solitarius_solitarius  common vireo of northeastern North America with bluish slaty-gray head

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