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Species on the Iowa Ornithologists Union checklist for which neither a known specimen nor a diagnostic photograph, motion picture or sound recording exists
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Research notes
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Ornithology--Methodology Photography of birds Rare birds
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1978-03-01
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1978-05-31
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Manuscript, graphic, and printed material
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Research notes by Nicholas S. Halmi containing a "list of species for which no tangible documentation in Iowa seems to exist." This document was used to inform bird watchers of what types of birds to photograph so that evidence of their presence in Iowa could be established. The list was created in cooperation with Woodward H. Brown and Peter C. Petersen. This item was used as supporting documentation for the Iowa Ornithologists Union Quarterly field report of spring, 1978.
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Halmi, Nicholas S.
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Iowa
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Iowa Ornithologists' Union | MS 166
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18
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5
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Great Horned Owl nesting study and research notes
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Reports Research notes Essays
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Bird banding Birds--Eggs Birds--Food Birds--Nests Birds--Research Ornithology--Methodology Birds--Infancy Eggs--Incubation
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1933-02-26
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1939-12-31
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Manuscript, graphic, and printed material
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An essay written by Walter Rosene reporting the findings from a study of nesting Great Horned Owls that he and Bob Walker completed over the course of seven years from 1934-1939. Included in the report are the outcomes from the eggs that were laid and brooded each year, the record of the food found in the nest, and the behavior of the owls. In the seven year study of this particular nesting site, six young birds grew to maturity and left the nest, and all of them were banded.
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Rosene, Walter, 1880-1941
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Great Horned Owl
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Beaver Creek Ogden
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Walter M. Rosene, Sr. Papers | MS 589
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13
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7
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