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Big Bluestem Audubon Society | MS 592
Woodward Hart Brown Papers | MS 502
Philip A. Dumont Papers | MS 153
Fairfield (Iowa) Bird Club Records | MS 386
Iowa Ornithological Association Records | MS 581
Iowa Ornithologists' Union | MS 166
Frederic Leopold Papers | MS 113
Walter M. Rosene, Sr. Papers | MS 589
Photograph of a Wood Duck in a house
Photographs
Birds--Research
Ornithology--Methodology
Birdhouses--Design and construction
1965-01-01
1965-12-31
Manuscript, graphic, and printed material
A Wood Duck looks out of a string covered opening in a Wood Duck house, 1965. The string stretched across the bird house opening was used by Frederic Leopold to determine whether birds had entered or left the nest.
Leopold, Frederic, 1895-1989
Wood Duck
Burlington
Frederic Leopold Papers | MS 113
6
6
Photograph of paper covering the entrance to a Wood Duck house
Photographs
Birds--Research
Ornithology--Methodology
Birdhouses--Design and construction
1966-05-01
1966-05-31
Manuscript, graphic, and printed material
A wooden Wood Duck house attached to the side of tree trunk, May 1966. The opening to the duck house is covered by a piece of paper that is fastened with string.
Leopold, Frederic, 1895-1989
Wood Duck
Burlington
Frederic Leopold Papers | MS 113
6
14
25
50
100
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