Vintage Porcelain pheasants with real looking feet from Japan

I acquired these two ring necked pheasants from an estate sale of a man that lived close to 100 years old. The two figurines each measure 7 5/8" from beak to tail and stand 5". They have natural looking feet which I hadn't seen before on other figurines. The only mark shows Japan. Can someone tell me more about how old they are?