#bird's_foot  the foot of a bird
  supertype:  #animal_foot__foot  a foot of a vertebrate other than a human being
  part:  #talon
  part of:  #bird
  subtype:  #claw.bird's_foot  a bird's foot that has claws
  subtype:  #zygodactyl_foot  having the the first and fourth toes of each foot directed backward and the second and third forward
  subtype:  #heterodactyl_foot  having the first and second toes of each foot directed backward and the third and fourth forward
  subtype:  #webbed_foot  a bird's foot with folds of skin between the toes
  subtype:  #lobate_foot  a foot having separate toes each with membranous flaps along the sides

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