Wiens, John A., authorNatural Resource Ecology Laboratory, Colorado State University, publisher2007-01-032007-01-031971http://hdl.handle.net/10217/16087February, 1971.born digitaltechnical reportsengCopyright and other restrictions may apply. User is responsible for compliance with all applicable laws. For information about copyright law, please see https://libguides.colostate.edu/copyright.Grassland ecology -- United StatesBird populations -- United States -- MeasurementText