Agman:"Selling the same level of per capita product at substantially higher prices does not represent movement along any demand curve.  It represents a shift upward in the demand curve."

Econ:  That only holds true "when all other things are held equal", Agman.  When poultry prices and supply change, your theory of demand does not hold true.

Okay, Agman, what is the reason for chicken taking over beef stomach space on a per capita basis? 

Tell us what you have forgotten.

It is your floor.