This is my ponysona, Doveheart, who is a batpony-changeling hybrid. He works as a veterinary assistant with a special affinity for birds. His cutie mark is 2 dove footprints inside a winged heart.
Some details not mentioned on the reference (which I may eventually add in a later version): he has two small fangs that only show when he opens his mouth, and he has smooth, chitinous skin like a changeling, instead of fluff like a pony.
Thank you so much!