Title Genres Topics Date (Start) Date (End)
Eldon J. Bryant letter to Woodward H. Brown regarding spring migration, May 17, 1964 Correspondence Field notes Bird populations Bird watching Birds--Migration Birds--Research Ornithology--Methodology 1964-05-17 N/A
Iowa Ornithologists' Union, field report compiled data, Ruby-crowned Kinglet, 1964-1983 Field notes Bird watching Birds--Counting Birds--Research 1964-05-17 1983-05-20
Audubon field notes summer migration 1964 contributed by Woodward H. Brown Field notes Bird declines Bird populations Bird watching Birds--Migration Birds--Nests Birds--Research Ornithology--Methodology Weather 1964-06-01 1964-07-31
Audubon field notes for spring 1964 migration contributed by Woodward H. Brown, June 7, 1964 Field notes Bird populations Bird watching Birds--Migration Birds--Research Ornithology--Methodology 1964-06-07 N/A
Pearl Knoop letter to Peter C. Petersen regarding bird sightings, June 10, 1964 Correspondence Field notes Bird populations Bird watching Birds--Migration Birds--Research Ornithology--Methodology 1964-06-10 N/A
Iowa Ornithologists' Union, Quarterly field report, fall 1964 Field notes Bird watching Birds--Migration Birds--Research Ornithology--Methodology Weather 1964-08-01 1964-11-30
Pearl Knoop letter to Peter C. Petersen regarding nesting season, August 21, 1964 Correspondence Field notes Bird watching Birds--Migration Birds--Nests Birds--Research Ornithology--Methodology 1964-08-21 N/A
Iowa Ornithologists' Union, field report compiled data, Northern Cardinal, 1964-1979 Field notes Bird watching Birds--Nests Birds--Research Birds--Infancy 1964-09-18 1979-09-19
Iowa Ornithologists' Union, field report compiled data, Hudsonian Godwit, 1964-1983 Field notes Bird watching Birds--Counting Birds--Research 1964-10-18 1983-05-30
Florence McCaughey letter regarding fall bird migration, November 25, 1964 Correspondence Field notes Bird populations Bird watching Birds--Migration Birds--Research Ornithology--Methodology Parulidae | Warblers 1964-11-25 N/A
Woodward H. Brown letter to Peter C. Petersen regarding Aubudon field notes, December 9, 1964 Correspondence Field notes Bird populations Bird watching Birds--Research Ornithology--Methodology Charadriiformes | Shore-birds, Gulls, and Auks 1964-12-09 N/A
Photograph of a Wood Duck in a house Photographs Birds--Research Ornithology--Methodology Birdhouses--Design and construction 1965-01-01 1965-12-31
Photograph of a snake in a Wood Duck house Photographs Birds--Research Birdhouses Predatory animals 1965-01-01 1965-12-31
Photograph of the inside bottom of a Wood Duck house Photographs Birds--Research Birdhouses 1965-01-01 1965-12-31
Photograph of a male and female Wood Duck in a tree Photographs Birds--Habitat Birds--Research Wood duck--Behavior 1965-01-01 1965-12-31
Photograph of a snake among duck eggs in a Wood Duck house Photographs Birds--Eggs Birds--Research Birdhouses Predatory animals 1965-01-01 1965-12-31
Photograph of a mother Wood Duck with ducklings on the ground Photographs Birds--Research Ducklings Wood duck--Behavior 1965-01-01 1965-12-31
Photograph of an adult Wood Duck leaving a duck house Photographs Birds--Research Birdhouses Wood duck--Behavior 1965-01-01 1965-12-31
Photograph of Wood Duck ducklings swimming in a bucket Photographs Birds--Research Ducklings Wood duck--Behavior 1965-01-01 1965-12-31
Photograph of Frederic Leopold on a ladder checking a Wood Duck house Photographs Bird watchers Birds--Research Birdhouses 1965-01-01 1965-12-31
Photograph of a male and female Wood Duck in a tree Photographs Birds--Habitat Birds--Research 1965-01-01 1965-12-31
Photograph of Wood Duck houses in trees Photographs Birds--Research Birdhouses 1965-01-01 1965-12-31
Iowa Ornithologists' Union, field report compiled data, Lapland Longspur, 1965-1983 Field notes Bird watching Birds--Counting Birds--Research 1965-04-28 1983-04-27
Iowa Ornithologists' Union, field report compiled data, American Black Duck, 1965-1983 Field notes Bird watching Birds--Counting Birds--Research 1965-08-02 1983-05-16
Iowa Ornithologists' Union, field report compiled data, Purple Finch, 1965-1983 Field notes Bird watching Birds--Counting Birds--Research 1965-09-06 1983-05-14