Green budgie with yellow head, found near Bagnell Dam overlook

I found a small budgie this afternoon around 3:15pm, perched on the railing outside the Osage Beach City Park along Bagnell Dam Blvd, by Lake of the Ozarks. It's about 6-7 inches from beak to tail, lime-green body with a yellow head, and a faint blue tint on the wings. There's a tiny white spot on the left wing that looks like a birthmark, and a red plastic leg band with the numbers 18K. The bird seemed healthy but a bit skittish. I’m hoping to reunite it with its owner or turn it over to a local rescue; if anyone recognizes this bird, please reply here so we can get it home.