Title Genres Topics Date (Start) Date (End)
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
Ron Muilenburg letter to Nicholas S. Halmi regarding fall migration, 1976 Correspondence Field notes Bird watching Anseriformes | Ducks, Geese, and Swans Fringillidae | Finches Galliformes | Quails, Pheasants, Turkeys, and Grouse 1976-08-24 N/A
Fall report, Fremont County, Iowa and nearby areas Correspondence Field notes Bird watching Birds--Migration Fringillidae | Finches Parulidae | Warblers Water birds 1976-08-01 1976-11-30
Betty Walters letter to Nicholas S. Halmi regarding bird sightings, February 14, 1977 Correspondence Field notes Bird watching Fringillidae | Finches 1977-02-14 N/A
W. Ross Silcock letter to Nicholas S. Halmi regarding highlights of the Christmas bird count, January 30, 1977 Correspondence Field notes Bird watching Birds--Counting Birds--Research Ornithology--Methodology Fringillidae | Finches N/A N/A
Observations and data on various birds, part 3 of 3, Woodward Hart Brown Correspondence Field notes Research notes Bird watching Birds--Nests Icteridae | Blackbirds, Orioles, Meadowlarks, and allies Fringillidae | Finches Thraupidae | Tanagers Vireonidae | Vireos Parulidae | Warblers N/A N/A