> But how do you compensate for the weight of the chickenfeed (variable) and
> the byproducts (Variable, and smelly)
>
> Use a catapult, so that every time a bird steps to the center during the
> sampling interval, he's catapulted into a wall. (taking care of the
> territoriality problem)
> Use a video camera to mark the impact point, and calculate the weight from
> the trajectory. The expended chicken then slides into a bag labelled "Mc
> Nuggets".
>

I think that this one deserves to win :)