Title Genres Topics Date (Start) Date (End)
Peter C. Petersen letter and checklist to Nicholas S. Halmi regarding fall migration, 1976 Correspondence Field notes Bird banding Bird watching Birds--Research Trapping 1976-12-05 N/A
Peter C. Petersen letter to Nicholas S. Halmi regarding fall migration, 1976 Correspondence Field notes Bird watching Birds--Research 1976-08-23 N/A
Pearl Knoop letter to Peter C. Petersen regarding fall migration, December 15, 1962 Correspondence Field notes Bird watching Birds--Migration Birds--Research Ornithology--Methodology 1962-12-15 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
Marion M. Brewer letter to Nicholas S. Halmi regarding fall migration, 1976 Correspondence Field notes Bird watching Birds--Research 1976-10-27 N/A
Gladys Black letter to Nicholas S. Halmi regarding fall migration, 1976 Correspondence Field notes Bird watching Birds--Research Wildlife refuges 1976-11-23 N/A
Gladys Black letter to Nicholas S. Halmi regarding fall migration, 1976 Correspondence Field notes Bird watching Birds--Migration Birds--Research 1977-01-17 N/A
Gladys Black letter to Nicholas S. Halmi regarding fall migration, 1976 Correspondence Field notes Bird watching Birds--Research Ornithology--Methodology Trapping 1976-12-10 N/A
Gladys Black letter to Nicholas S. Halmi regarding fall migration, 1976 Correspondence Field notes Bird watching Birds--Research Ornithology--Methodology 1976-12-01 N/A
Gladys Black letter to Nicholas S. Halmi regarding fall migration, 1976 Correspondence Field notes Bird banding Bird watching Birds--Research 1976-10-25 N/A
Darwin Koenig letter to Nicholas S. Halmi regarding fall migration, 1976 Correspondence Field notes Bird watching Birds--Research Charadriiformes | Shore-birds, Gulls, and Auks Parulidae | Warblers 1976-08-22 N/A
Audubon field notes for Iowa, fall 1966 Correspondence Field notes Bird watching Birds--Identification Birds--Migration Birds--Research Ornithology--Methodology Fringillidae | Finches 1966-08-01 1966-11-30
Iowa Ornithologists' Union, Quarterly field report, Spring 1986 Field notes Bird watching Birds--Migration Birds--Research Ornithology--Methodology Charadriiformes | Shore-birds, Gulls, and Auks Parulidae | Warblers Weather 1986-03-01 1986-05-31
Eugene and Eloise Armstrong letter to Thomas H. Kent regarding bird sightings near Booneville, Iowa, spring 1984 Correspondence Field notes Bird watching Birds--Research 1984-03-01 1984-05-31
Eldon J. Bryant letter to Thomas H. Kent regarding spring bird sightings, Akron, Iowa, May 28, 1984 Correspondence Field notes Bird kills Bird watching Birds--Migration Birds--Research Weather 1984-05-28 N/A
Documented sightings for Iowa, spring 1984 Field notes Bird watching Birds--Counting Birds--Research 1984-03-01 1984-05-31
Field report spring 1978 Field notes Bird watching Birds--Research 1978-05-31 N/A
Dean Mosman letter to Vernon M. Kleen regarding bird kills at the Alleman TV tower and hawk population, November 20, 1975 Correspondence Field notes Bird watching Birds of prey Birds--Migration Birds--Research Accipitridae | Hawks and Eagles Radio and television tower bird strikes 1975-11-20 N/A
Council Bluffs, Iowa spring 1975 migration report Field notes Bird watching Birds--Migration Birds--Research Ornithology--Methodology 1975-03-01 1975-05-31
Iowa Ornithologists' Union, field report compiled data, Yellow-throated Warbler, 1982-1983 Field notes Bird watching Birds--Counting Birds--Research 1982-04-18 1983-07-04
Iowa Ornithologists' Union, field report compiled data, Yellow-throated Vireo, 1980-1983 Field notes Bird watching Birds--Counting Birds--Research 1980-06-14 1983-04-30
Iowa Ornithologists' Union, field report compiled data, Yellow-rumped Warbler, 1980-1983 Field notes Bird watching Birds--Counting Birds--Research 1980-05-19 1983-05-26
Iowa Ornithologists' Union, field report compiled data, Yellow-headed Blackbird, 1979-1983 Field notes Bird feeders Bird watching Birds--Counting Birds--Research 1979-10-27 1983-06-08
Iowa Ornithologists' Union, field report compiled data, Yellow-Crowned Night Heron, 1963-1983 Field notes Bird watching Birds--Counting Birds--Research 1963-04-01 1983-06-05
Iowa Ornithologists' Union, field report compiled data, Yellow-breasted Chat, 1958-1983 Field notes Bird watching Birds--Counting Birds--Research 1958-09-28 1983-07-16