Fated: Fox and the Finch by Hawke Oakley

Farley:
His bird form may be tiny, but his attitude sure as f*ck isn’t.
Farley’s a pissed-off finch omega who wants nothing more than to kick every alpha where the sun don’t shine. After escaping a finch shifter breeding colony, Farley’s determined to save the rest of his brethren from a life of being objectified.
Just one problem: he can’t shift back.
To add insult to injury, only an alpha can unlock his shift-blocker. Fat chance. He’d rather die than work with the enemy.
So when a fox alpha offers him help, why is it so hard to refuse?

Quinn:
Alpha Quinn is a fox shifter who yearns for two things: a pair of wings, and a fated mate.
That’s not too much to ask, right?
Rumor has it an air spirit can bless him with wings. But blessings aren’t free. Quinn has to earn it. What better way than to help a finch shifter save his kind?
As their destinies intertwine and sparks begin to fly, Quinn can’t get Farley out of his head—or his heart. Could he be the mate Quinn’s been searching for?
And when danger looms, can the fated bond they’ve been denying save them?