Title Genres Topics Date (Start) Date (End)
Audubon field notes for Des Moines, winter 1963-1964 Field notes Bird declines Bird populations Bird watching Birds--Migration Birds--Research Ornithology--Methodology 1963-12-01 1964-02-28
Audubon field notes for winter migration 1963-1964 contributed by Frederick W. Kent Field notes Bird populations Bird watching Birds--Migration Birds--Research Ornithology--Methodology Weather 1963-12-01 1964-02-28
Pearl Knoop letter to Peter C. Petersen regarding bird sightings, December 7, 1963 Correspondence Field notes Bird watching Birds--Research Ornithology--Methodology 1963-12-07 N/A
Audubon field notes, fall migration, 1963 Field notes Bird watching Birds--Research Ornithology--Methodology Weather 1963-12-08 N/A
Florence McCaughey letter to Peter C. Petersen regarding field notes, December 10, 1963 Correspondence Field notes Bird watching Birds--Research Ornithology--Methodology 1963-12-10 N/A
Iowa Ornithologists' Union, Quarterly field report, spring 1964 Field notes Bird watching Birds--Research Ornithology--Methodology 1964-03-01 1964-05-31
Iowa Ornithologists' Union, field report compiled data, Least Flycatcher, 1964-1983 Field notes Bird watching Birds--Counting Birds--Research 1964-05-02 1983-07-23
Iowa Ornithologists' Union, field report compiled data, Indigo Bunting, 1964-1983 Field notes Bird watching Birds--Counting Birds--Research 1964-05-02 1983-05-08
Iowa Ornithologists' Union, field report compiled data, Eastern Wood-Pewee, 1964-1983 Field notes Bird watching Birds--Counting Birds--Research 1964-05-07 1983-05-12
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
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
Iowa Ornithologists' Union, field report compiled data, Blue Grosbeak, 1965-1982 Field notes Bird watching Birds--Counting Birds--Research 1965-10-04 1982-09-11
Iowa Ornithologists' Union, field report compiled data, Common Redpoll, 1965-1982 Field notes Bird watching Birds--Counting Birds--Research 1965-10-23 1982-12-31