I already have a winged model set up for the demo. Unfortunately I'm not going to create the demo unless you respond in some time less than a week. I'm in the midst of finalizing a new freebie. Here's an illustration of why you shouldn't use a morph for rotations...

Notice how when the wings unfold that the scale of the wings goes all wonky in the midst of the morph from a closed state to a final open state? While this isn't much of an issue for stills, for animations not the optimal solution...

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W10 Pro, HP Envy X360 Laptop, Intel Core i7-10510U, NVIDIA GeForce MX250, Intel UHD, 16 GB DDR4-2400 SDRAM, 1 TB PCIe NVMe M.2 SSD

Mudbox 2022, Adobe PS CC, Poser Pro 11.3, Blender 2.9, Wings3D 2.2.5

My Freestuff and Gallery at ShareCG