This is a large platform or a stage vanish of live stock.  A couple of doves, pigeons, chicken, or even a Rabbit, small Puppy or Kitten is placed in a box resting on a table. The box is then taken apart piece by piece, shown freely and tossed to an assistant.  The audience suspect the live stock to be concealed somewhere in the table so this is also taken apart, folded and tossed to an assistant.  The live stock has completely vanished.