Title Genres Topics Date (Start) Date (End)
Peter C. Petersen letter to Carl Bendorf regarding bird sightings for the IOU Quarterly Field Report, December 1, 1989 Correspondence Field notes Bird watching Birds--Counting Ornithology--Methodology Rare birds 1989-12-01 N/A
Bery Engebretsen letter to Ross Silcock regarding bird sightings during winter 1991, February 24, 1992 Correspondence Field notes Bird watching Birds--Identification Rare birds Waterfowl 1992-02-24 N/A
Carl Priebe letter to Carl J. Bendorf regarding bird sightings in the fall 1990, September 28, 1990 Correspondence Field notes Bird watching Birds--Identification Laridae | Gulls and Terns Threskiornithidae | Ibises Rare birds 1990-09-28 N/A
Lanny Haldy letter to Carl Bendorf regarding bird sightings for the Amana, IA area, August 22, 1990 Correspondence Field notes Animal migration--Climatic factors Bird watching Birds--Identification Birds--Nests Phalacrocoracidae | Cormorants Gaviiformes | Loons 1990-08-22 N/A
J. Donald Gillaspey letter to Carl J. Bendorf regarding bird sightings in Lamoni, IA, November 23, 1990 Correspondence Field notes Bird watching Birds--Behavior Birds--Identification Rare birds 1990-11-23 N/A
Dennis Carter letter to Carl Bendorf regarding field reports for inclusion in IOU quarterly field report, November 30, 1990 Correspondence Field notes Bird watching Birds--Identification Rare birds 1990-11-30 N/A
Jim Sinclair letter to Jim Dinsmore regarding summer field reports for IOU quarterly field reports for summer 1990, July 31, 1990 Correspondence Field notes Bird watching Birds--Identification Birds--Nests 1990-07-31 N/A
Carl Priebe letter to Jim Dinsmore regarding bird sighting for the IOU quarterly field report summer 1990, August 6, 1990 Correspondence Field notes Animal migration--Climatic factors Bird watching Birds--Identification Charadriiformes | Shore-birds, Gulls, and Auks Weather 1990-08-06 N/A
Kay Gramlich letter to James Dinsmore regarding sightings and feeding of pine siskin, August 2, 1990 Correspondence Field notes Bird watching Birds--Identification Birds--Feeding and feeds 1990-08-02 N/A
Letter from Bery Engebretsen to James Dinsmore regarding bird sightings for the IOU quarterly field report summer 1990, August 1, 1990 Correspondence Field notes Bird watching Birds--Identification 1990-08-01 N/A
Neil Bernstein letter to Jim Dinsmore regarding bird sightings for IOU quarterly field report for summer 1990, July 3, 1990 Correspondence Field notes Bird watching Birds--Behavior Birds--Conservation Birds--Identification Birds--Nests 1990-07-03 N/A
Pam and Reid Allen letter to Jim Dinsmore regarding bird sightings for IOU quarterly field report for summer 1990, July 24, 1990 Correspondence Field notes Bird watching Birds--Identification Birds--Feeding and feeds Zoological specimens 1990-07-24 N/A
John Van Dyk letter to Carl J. Bendorf regarding field reports for the IOU quarterly field report, December 1, 1989 Correspondence Field notes Bird watching Birds--Behavior Birds--Identification Birds--Migration Parulidae | Warblers Weather 1989-12-01 N/A
Darwin Koenig letter to James J. Dinsmore regarding bird sightings, August 1, 1988 Correspondence Field notes Bird watching Birds--Nests Birdsongs Birds--Infancy Birds--Feeding and feeds 1988-08-01 N/A
Darwin Koenig letter to James J. Dinsmore regarding summer bird sightings, August 3, 1989 Correspondence Field notes Bird watching Birds--Counting Birds--Nests Birds--Infancy 1989-08-03 N/A
W. Ross Silcock letter to Thomas H. Kent regarding questions about the Christmas bird count, February 28, 1989 Correspondence Bird watching Birds--Counting Birds--Research Ornithology--Methodology 1989-02-28 N/A
Field notes and Barbara L. Wilson letter to Carl J. Bendorf, November 28, 1988 Correspondence Field notes Bird feeders Bird watching Birdsongs Weather Birds--Infancy 1988-11-28 N/A
W. Ross Silcock letter to Carl J. Bendorf regarding bird sightings, November 25, 1988 Correspondence Field notes Bird watching Birds--Counting Birds--Identification Birds--Infancy 1988-11-25 N/A
Ione Getscher letter to Carl J. Bendorf regarding bird sightings, September 19, 1988 Correspondence Field notes Bird watching Birds--Counting Birdsongs Birds--Infancy 1988-09-19 N/A
Bery Engebretsen letter to Carl J. Bendorf regarding bird sightings, December 1, 1988 Correspondence Field notes Bird watching Birds--Counting Birds--Identification Weather 1988-12-01 N/A
Eloise Armstrong and Eugene Armstrong letter to Carl J. Bendorf regarding bird sightings, November 28, 1988 Correspondence Field notes Bird feeders Bird watching Birds--Identification Birdsongs 1988-11-28 N/A
Field notes and Pam Allen and Reid I. Allen letter to Carl J. Bendorf, December 1, 1988 Correspondence Field notes Bird watching Birds--Identification 1988-12-01 N/A
James J. Dinsmore letter to Bruce Ehresman regarding Short-eared Owls and Northern Harriers , December 28, 1988 Correspondence Field notes Bird watching Birds--Eggs Birds--Nests Birds--Infancy 1988-12-28 N/A
Douglas E. Trapp letter to James J. Dinsmore regarding two owl species sightings, August 1, 1988 Correspondence Field notes Bird watching Birdsongs 1988-08-01 N/A
Peter E. Lowther letter to James J. Dinsmore regarding bird sightings, June 21, 1988 Correspondence Field notes Bird watching Birds--Eggs Birds--Nests 1988-06-21 N/A