#perch  support consisting of a branch or rod that serves as a resting place (especially for a bird)
  supertype:  #support.device  any device that bears the weight of another thing; "there was no place to attach supports for a shelf"
  part of:  #roost.shelter
  subtype:  #roost  a perch on which domestic fowl rest or sleep

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