When I was at the ICLEI conference in Montreal in 2011 there was this young woman who presented her master's thesis about creating new habitat for wildlife in business campuses.
All that space, green lawn, large property and typically it's a dead zone or they plant exotics like hostas - so she was proposing to bring back native habitat including ponds and streams and develop these spaces as greenspace corridors.
Such a brilliant idea! And now I have found The Wildlife Habitat Council which promotes and certifies habitat conservation and management on corporate lands through partnerships and education! Exactly what she was envisioning!
Check them out - they have a white paper for download and on-demand webinars (free of charge).
From their website:
The opportunity exists to re-examine the way corporate campus lands are managed. New and existing corporate campuses can incorporate nature in their designs, realizing the cost savings of native landscaping, the human benefits of a more natural setting, and the opportunity to restore productive habitat and reconnect a fragmented suburban landscape.