You explain that your new hobby is birdwatching. With unbelievable speed, you demonstrate your ability to count how many birds are showing. While your back is turned, a spectator arranges several pictures of birds into a row on the table top in any way desired.
 
The total number of birds is know only to your spectator. However, as soon as you turn around, you can instantly and accurately state the number of birds showing. In the final stage, you are able to state exactly how many birds were chosen, even while the cards are out of view, and inside of a sealed case! Your audience will be taken a back by your super-human skill. This mentalism trick utilizes a new principle which has surprised magicians around the world.
 
Condition Notes: Complete with original instructions. Packaging and instructions show minor storage and age wear, remaining overall in excellent condition.