I knew somebody who's dog would pick up two birds. At a Master test she told the judges that this would happen and their reply was as long as she does not drop the first bird to pick up the second bird it is not a switch and is legal. And what they did was put a tiny piece of tape on the leg of one bird - that way they would know when the dog delivered which bird was which and if a "switch" occurred or not. It did not! :wink:
Andy
Andy