Title Genres Topics Date (Start) Date (End)
Photograph of a Rough-legged Hawk roost Photographs Birds--Habitat 1960-11-01 1961-02-28
Gladys Black letter to Michael Newlon regarding bird sightings including a Pine Grosbeak, February 1, 1984 Correspondence Field notes Photographs Bird feeders Bird watching Birds--Identification Rare birds 1984-02-01 N/A
Jim Matthews letter to Jim Dinsmore regarding Clay-colored Sparrow sightings in Lyon County, July 30, 1986 Correspondence Field notes Photographs Birds--Identification Falconiformes | Hawks, Eagles, Falcons, Osprey, and Vultures Rare birds 1986-06-19 1986-07-30
Photograph of a young Broad-winged Hawk Photographs Bird watching Birds--Infancy 2003-07-14 N/A
Photograph of a White-winged Dove perching on a tree branch Photographs Bird watching 2002-07-02 N/A
Field notes, photograph, and letter to James J. Dinsmore contributed by Ed Thelen, summer 2002 Correspondence Field notes Photographs Bird watching Birds--Counting Birds--Identification Birds--Nests Birds--Infancy 2002-06-01 2002-07-31
Field notes contributed by Jacob T. Gilliam, summer 2002 Field notes Photographs Bird watching Birds--Counting Birds--Identification Birds--Nests Birds--Infancy 2002-06-01 2002-07-31
Rare bird documentation form for Cape May Warbler at Cedar Rapids, 1999 Field notes Photographs Birds--Identification Ornithology Photography of birds Rare birds 1999-12-26 2000-01-02
Round Lake, State Game Refuge, 1928 Photographs Photography of birds Water birds 1928-01-01 1928-12-31
American Egrets, Allen Green Refuge, Burlington, Iowa Photographs Photography of birds N/A N/A
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 leaving the duck house Photographs Birds--Research Birdhouses Ducklings Wood duck--Behavior N/A N/A
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 Frederic Leopold next to tent Photographs Camping N/A 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 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
Photograph of a Wood Duck perched on a Wood Duck house Photographs Birds--Habitat Birds--Research Birdhouses 1960-01-01 1960-12-31
Photograph of a Wood Duck house Photographs Birds--Research Birdhouses 1960-01-01 1960-12-31
Photograph of a Wood Duck house and an observation blind in front of Frederic Leopold's house Photographs Birds--Research Birdhouses 1960-01-01 1960-12-31
Photograph of Frederic Leopold and a hunting dog Photographs Winter Hunting 1978-01-01 1978-12-31
Photograph of Frederic Leopold dressed in suit Photographs Wildlife conservationists 1971-01-13 N/A
Photograph of Frederic Leopold pulling a sled Photographs Winter Cross-country skiing N/A N/A