FWS National Guidance on Surrogate Species
Background materials from the FWS in support of the use of surrogate species as part of the Service's commitment to Landscape Conservation and Strategic Habitat Conservation.
FWS National Guidance on Surrogate Species Approach
(draft Technical Guidance) for reivew and comments: July 2012
FWS - FAQ on Surrogate Species
From USFWS Website. Frequently Asked Questions.