Title Genres Topics Date (Start) Date (End)
Documents regarding a Wood Duck study, February 27, 1964 Checklists Correspondence Questionnaires Bird surveys Bird watchers Birds--Nests Birds--Research Ornithology--Methodology Predatory animals Ducks--Counting Ducklings 1964-02-27 N/A
Documents regarding a Wood Duck study, 1963 Correspondence Questionnaires Bird surveys Bird watching Birds--Nests Birds--Research Ornithology--Methodology Ducklings 1963-01-01 1963-12-31
C. A. Stewart letter to multiple recipients regarding a revised check list for the birds of Iowa, February 3, 1950 Correspondence Forms (documents) Instructional materials Bird populations Bird surveys Bird watching Birds--Identification Ornithology--Methodology 1950-02-03 N/A
Bruce Ehresman letter to the Breeding Bird Atlas coordinator, December 5, 1990 Correspondence Bird populations Bird surveys Environmental monitoring 1990-12-05 N/A
Althea Sherman letter to Philip DuMont regarding the "Birds of Polk County, Iowa", January 5, 1932 Correspondence Bird surveys Ornithology--Methodology Ornithological literature 1932-01-05 N/A