By that logic, we should also bring back dinosaurs, mammoths, and malaria — they all used to be here too.
The real problem that could actually impact forest users is the Endangered Species Act.
That can mean trail and road closures, ski and snowmobile restrictions, and more restricted access for anyone using public land every time someone finds a wolverine turd in the snow.
And for what benefit? It's not like there is an ecological niche that existing birds and animals don't already fill. As BushMasterBoy said, this $850k could be better used elsewhere.
I have nothing against this in theory, but as Tom Sowell says, intentions and outcomes are often two wildly different things.
They can sell it as biodiversity and research, but the outcome will be less use of public land by the public. Which is exactly what leftists want.