Baby For The Tark Commander by Aurelia Skye

Rana reluctantly accepts her duty as a proxy but is drawn to her mate. As their love develops, a growing rebellion threatens to tear them apart.
Like every other Earth woman in compliance, Rana registers for the proxy draft, praying she won’t be matched with a Faction alien. Instead, she’s quickly paired with Tark Commander Sarko D’sano. With handsome features and glossy white feathers, she’s instantly drawn to him. He soon proves himself to be a gentle mate who wants a mate, not just offspring.
As she surrenders to the pull between them, planning to build a future with her alien mate, a rebellion stirs. Some are fed up with the draft and see it as slavery. They’re getting more desperate and bolder, and they think they’re rescuing women mated to the aliens. When they try to “save” Rana from Sarko, they have no idea what they’ve unleashed, or how far each of them will go to return to the other.