#flock  a group of birds
  supertype:  #animal_group  a group of animals
  member:  #bird
  subtype:  #bevy.flock  a flock of quail
  subtype:  #covert  a flock of coots
  subtype:  #covey  a small flock of grouse or partridge
  subtype:  #gaggle  a flock of geese
  subtype:  #wisp.flock  a flock of snipe
  subtype:  #flight.flock  a flock of flying birds

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