Micro Balancing Birds: how small can a balance bird be and still work? More mass towards the wing tips creates a center of mass below the beaks of these birds, making systems that are in stable equilibrium. Bonus- they are fluorescent under UV! Obviously no magnets used- instead the magic comes from engineering the center of mass to be outside the body of the object and below the balance point. These tiny birds and conical stands are sold on Amazon as party favors- and they work great (although