Just in case anybody actually wants to flap their wings.....

The secret to flapping wings with DAZ is use the Timeline graph.... Select the two wing joints and then view those nodes on the Timeline graph.
Put in a set of dual wing movements in sync, like my graph shown , See if wings flap the way you want. Once they do, you can cut and paste the graph data for the rest of the animation. If you happen to get weird glitches highlight that section of graph, choose "Linear" and then "TCB". Glitches will disappear... Don't tell anyone it is a secret....

You can also use this technique for flapping your jaws, flapping your arms, sloppy walking, make hips sway back and forth, breasts move up and down and whole lot more.....