Information on the birds and mammals in Lewis & Clark's journals was

compiled from information found at the following sources:

A Field Guide to the Prairie - University of Minnesota;
Baltimore Bird Club;
Cornell University;
USF&W Service;
Canadian Wildlife Service - Environment Canada;
Desert USA;
Ducks Unlimited;
Patuxent Wildlife Research Center;
Stanford University;
Northern Prairie Wildlife Research Center;
Zim, Herbert S., Ph.D.