Title Genres Topics Date (Start) Date (End)
Iowa Ornithologists' Union, quarterly field report, fall 1963 Field notes Bird watching Birds--Research Ornithology--Methodology 1963-08-01 1963-11-30
Joe Kennedy letter to Peter C. Petersen regarding field notes, Fall 1963 Correspondence Field notes Bird watching Birds--Research Ornithology--Methodology 1963-08-01 1963-11-30
Harold Fetter letter to Peter C. Petersen regarding bird sightings, August 14, 1963 Correspondence Field notes Bird watching Birds--Eggs Birds--Research Ornithology--Methodology 1963-08-14 N/A
Pearl Knoop letter to Peter C. Petersen regarding fall migration, August 17, 1963 Correspondence Field notes Bird watching Birds--Migration Birds--Nests Birds--Research Ornithology--Methodology 1963-08-17 N/A
Iowa Ornithologists' Union, field report compiled data, Snow Goose, 1963-1983 Field notes Bird watching Birds--Counting Birds--Research 1963-08-28 1983-07-22
Iowa Ornithologists' Union, field report compiled data, Blue-gray Gnatcatcher, 1963-1983 Field notes Bird watching Birds--Counting Birds--Research 1963-09-21 1983-05-24
Iowa Ornithologists' Union, field report compiled data, Red-necked Phalarope, 1963-1983 Field notes Bird watching Birds--Counting Birds--Research 1963-09-28 1983-06-22
Tim C. Moermond letter to Peter C. Petersen regarding field notes, November 27, 1963 Correspondence Field notes Bird watching Birds--Research Ornithology--Methodology 1963-11-27 N/A
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, 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, 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, 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