We describe a new estimate of the radio galaxy 1.4 { GHz } luminosity function and its evolution at intermediate redshifts ( z \sim 0.4 ) .
Photometric redshifts and color selection have been used to select B _ { J } < 23.5 early-type galaxies from the Panoramic Deep Fields , a multicolor survey of two 25 \Box ^ { \circ } fields .
Approximately 230 radio galaxies have then been selected by matching early-type galaxies with NVSS radio sources brighter than 5 { mJy } .
Estimates of the 1.4 { GHz } luminosity function of radio galaxies measure significant evolution over the observed redshift range .
For an \Omega _ { M } = 1 cosmology the evolution of the radio power is consistent with luminosity evolution where P ( z ) \sim P ( 0 ) ( 1 + z ) ^ { k _ { L } } and 3 < k _ { L } < 5 .
The observed evolution is similar to that observed for UVX and X-ray selected AGN and is consistent with the same physical process being responsible for the optical and radio luminosity evolution of AGN .