Title Genres Topics Date (Start) Date (End)
Great Horned Owl nesting study and research notes Reports Research notes Essays Bird banding Birds--Eggs Birds--Food Birds--Nests Birds--Research Ornithology--Methodology Birds--Infancy Eggs--Incubation 1933-02-26 1939-12-31
Clarence Cottam letter to Walter Rosene regarding the analysis and contents of Long-eared Owl pellets, May 28, 1936 Correspondence Reports Birds--Research Ornithology--Methodology Bird droppings 1936-05-28 N/A
Nesting Wood Duck study (35 Years) Reports Tables (documents) Birds--Eggs Birds--Nests Birds--Research Ornithology--Methodology Birdhouses Predatory animals Waterfowl management Eggs--Incubation Ducks--Counting Ducklings Wood duck--Behavior 1984-01-01 1984-12-31
The One hundred most common birds of Polk County, Iowa Reports Theses Bird surveys Birds--Identification Ornithology--Methodology 1926-06-04 N/A
Birds of Polk County Iowa Reports Publications (documents) Bird surveys Ornithology--Bibliography Ornithology--Methodology 1931-10-01 1931-10-31
The Iowa Breeding Bird Atlas Project Administrative reports Maps (documents) Bird populations Bird surveys Ornithology--Methodology Environmental monitoring Publishers and publishing N/A N/A
Report on a revised birds of Iowa Reports Drafts (documents) Bird watching Bird watching--Guidebooks Birds--Identification Ornithology--Methodology Zoological specimens N/A N/A
Field report submitted by James P. Sandrock, June-July 1982 Field notes Reports Bird watching Birds--Research Ornithology--Methodology 1982-06-01 1982-07-31
Iowa Breeding Bird Atlas News, Volume 1, Number 1 Reports Ornithology--Methodology Ornithology--Societies, etc 1987-01-01 1987-12-31
Report to Wood Duck observers with attached mailing list, September 13, 1963 Reports Bird surveys Bird watchers Birds--Nests Birds--Research Ornithology--Methodology Birdhouses--Design and construction Ducks--Counting 1963-09-13 N/A
Iowa Distributional Check-list Administrative reports Checklists Bird watching Birds--Geographical distribution Birds--Identification Birds--Research Ornithology--Methodology 1954-01-01 1954-12-31
Checklist of Iowa birds Administrative reports Checklists Bird watching Birds--Identification Birds--Nomenclature Birds--Research Ornithology--Methodology 1962-01-01 1962-12-31
Summary of Bird Banding Reports Bird banding Bird watching Birds--Migration Ornithology--Methodology Strigiformes | Owls 1937-04-01 1937-04-30
Bird Banding Near Fairfield During 1936-1937 Reports Tables (documents) Bird banding Ornithology--Methodology Hunting--Moral and ethical aspects Birds--Mortality 1936-01-01 1937-12-31