Hedges and Trees - Habitat?

I am working on a project on an urban brownfield site, so we will be restoring habitat. We have designed a large, biologically diverse meadow on the site, but we are short on our required square footage because our green roof was VE'd out. I am trying to find potential additional square footage that might count toward our habitat and have a couple of questions: 1) Would the square footage of a native/adapted hedge count toward this credit? Yes, a hedge is a monoculture, but they also provide lots of habitat for various critters including birds and small mammals. Does it make a difference if the hedge is wildgrown or clipped? 2) We are planting a large number of native/adapted trees on a lawn. I know that the turf lawn does not count, but what about the trees? Is it possible to count the square footage of the trees' crowns as habitat? Thanks!