allow substantial loss of habitat for species that depend on older forests.

It doesn't matter what you do for species if you don't protect their habitat.

You get to see things like what species are attracted to certain habitat. You'll also see what types of habitat the come to when they do come back.

Of course species need habitat to recover -- that's a no-brainer,

Fungi are the grand recyclers of the planet and the vanguard species in habitat restoration.

As the forest went, so went the bird. It's an indicator species, representative of what we did to the forests. Having it return is perhaps a sign that the forests and habitat are coming back as well.