Millennium Ecosystem Assessment: a major assessment
of the ability of the global ecosystem to support human activity. http://www.millenniumassessment.org/en/index.aspx
Birds Audubon Watchlist: a guide to American birds http://www.audubon.org/bird/watch/
The Raptor Center at the University of Minnesota http://www.raptor.cvm.umn.edu/
Primates Primate Info Net: comprehensive information about primatology.
Maintained by UW Madison, it has both original content and a literature database. http://pin.primate.wisc.edu/index.html