#young_bird__youngbird  a bird that is still young
  supertype:  #offspring__young  any immature animal
  subtype:  #fledgling  #baby_bird  #eaglet  #chick  #cygnet
  member of:  #class_Aves__Aves  birds
     member of:  #subphylum_Vertebrata__Vertebrata__Craniata__subphylum_Craniata  fishes; amphibians; reptiles; birds; mammals
        member of:  #phylum_Chordata__Chordata  comprises true vertebrates and animals having a notochord
           member of:  #kingdom_Animalia__Animalia__animal_kingdom  taxonomic kingdom comprising all living or extinct animals

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