"During 1970 and 1971, the two-year period covered in this biennial report, the Game Research Section of the Colorado Division of Game, Fish and Parks conducted field and/or laboratory research on most game birds and mammals of the State...In addition to ecological inquiry, dynamics such as population trends, productivity, and movements of some of these species were determined in key ranges...Summaries given in this report are necessarily brief, confined for the most part to need for study, a word on methods, and results in more or less general terms. Final reports will, of course, close each research project, giving findings and conclusion in suitable detail."--Page iii.