Grey (wild-type)
A variant of Java sparrow (Padda oryzivora)

Representative Java sparrowphoto — a dedicated image of this exact morph isn't available yet.
The natural Padda oryzivora: slate-grey body, black head with white cheek patches, and a heavy pink bill. The hardy baseline form of the species.
Keeper tips for this variant
Hardiest of the color forms — keep them in a roomy flight as they're active and social; note wild-collected birds are CITES-restricted so source captive-bred stock.