Mystery Dove

This bird was in a back area of Tropical Flights in the Phoenix Zoo

first impression was White-bibbed ( also called Jobi ) Ground dove ( Gallicolumba jobiensis )with a untypical head-coloration, because this species is kept in small numbers in the US and in Europe.
The only species which would fit better is the Marquesas Ground Dove ( Gallicolumba rubescens ) but I'm not aware this species is being kept in both US nor Europe.

I did some further research and now I´m quite sure it should be a White-throated Ground dove ( Galliicolumba xanthonura ).