 \seagul\bird\seahorse\parrot D _ { \mu } ^ { \mathrm { \scriptsize ~ N C } } \widehat \psi = \partial _ { \mu } \widehat \psi + e \theta ^ { \nu \rho } \, \partial _ { \nu } \widehat A _ { \mu } \, \partial _ { \rho } \widehat \psi \; .