Please, excuse my ignorance. I've got about 2 full days experience now with Spine and am not an animator. So, I don't even know the terms yet to search for to see if this has already been addressed.

I need to create an animation of say... a bird flapping it's wings. I've done a setup, have the bones in place and initial wings attached. Then, I switch to animation mode, and well, flap the wings. However, I really need to have alternate images of the wings at different frames to get the best effect rather than just animating static wings up and down.

Is this possible? What should I be searching for to learn more about this?