1970s vintage OMC Otagiri Japan ceramic figurines, mama & baby quail birds

70s or early 80s vintage ceramic quail figurines, unmarked, probably OMC - Japan. These have earth toned mottled finish, rustic bohemian style, very retro!

Both birds are in very good condition without damage. They measure 4 1/4" and 3 1/4" long, a hen and her chick?