Pretty much all differences in this regard can be attributed to the fact that the female pelvis needs to accommodate giving birth. On evolutionary time scales there's no proof of anything even remotely close to what you describe.
> Pretty much all differences in this regard can be attributed to the fact that the female pelvis needs to accommodate giving birth
I don't doubt that this is true, but a thing can evolve to serve two or more purposes. Feathers likely initially evolved for the purposes of thermoregulation, as well as to serve mating behavior.