The tag alias #15896 bone_wings -> skeletal_wings has been approved.
Reason: Same thing. Bone_wings has more posts, but skeletal_wings is a more descriptive name. Whichever tag ends up as the target should also implicate wings.
EDIT: The tag alias bone_wings -> skeletal_wings (forum #157315) has been approved by @Hillside_Moose.
Updated by DanbooruBot