I was thinking something along the line of a pheromone or similar. I guess mouse scent would draw attention in a feeding response type of way. Possibly a trail of mouse scent could be used to give him something to track when outside the cage. Although what would be the best way to implement and test that.

Do male BP's track females in the wild by pheromones?

Bought my first BP a few weeks ago, a young citrus pastel. Just trying to make his life more interesting, give him some mental stimulus.

-Rich