Title Genres Topics Date (Start) Date (End)
Matt Kenne note regarding weather and migration information, May 30, 1993 Field notes Bird watching Birds--Migration Charadriiformes | Shore-birds, Gulls, and Auks Vireonidae | Vireos Parulidae | Warblers Weather 1993-05-30 N/A
Iowa Birdline update, March 25, 1991 notes Field notes Bird watching Birds--Migration Waterfowl Dial-a-message telephone calls 1991-03-25 N/A
Iowa Birdline update, April 16, 1990 Field notes Bird watching Birds--Migration Passeriformes | Perching-birds and songbirds Charadriiformes | Shore-birds, Gulls, and Auks Dial-a-message telephone calls 1990-04-16 N/A
Iowa Birdline update, April 2, 1990 Field notes Bird watching Birds--Migration Anseriformes | Ducks, Geese, and Swans Waterfowl Dial-a-message telephone calls 1990-04-02 N/A
Iowa Birdline update, April 22, 1991 notes Field notes Bird watching Birds--Migration Dial-a-message telephone calls 1991-04-22 N/A
Iowa Birdline update, April 30, 1990 Field notes Bird watching Birds--Migration Anseriformes | Ducks, Geese, and Swans Laridae | Gulls and Terns Charadriiformes | Shore-birds, Gulls, and Auks Parulidae | Warblers Dial-a-message telephone calls 1990-04-30 N/A
Iowa Birdline update, April 9, 1990 Field notes Bird watching Birds--Migration Dial-a-message telephone calls 1990-04-09 N/A
Iowa Birdline update, August 14, 1989 Field notes Bird watching Birds--Migration Passeriformes | Perching-birds and songbirds Charadriiformes | Shore-birds, Gulls, and Auks Dial-a-message telephone calls 1989-08-14 N/A
Iowa Birdline update, August 18, 1988 Field notes Bird watching Birds--Migration Laridae | Gulls and Terns Ciconiiformes | Herons, Bitterns, Egrets, Ibises, and Storks Parulidae | Warblers Dial-a-message telephone calls 1988-08-18 N/A
Iowa Birdline update, August 7, 1989 Field notes Bird watching Birds--Migration Charadriiformes | Shore-birds, Gulls, and Auks Dial-a-message telephone calls 1989-08-07 N/A
Iowa Birdline update, March 11, 1991 notes Field notes Bird watching Birds--Migration Waterfowl Dial-a-message telephone calls 1991-03-11 N/A
Iowa Birdline update, March 13, 1989 Field notes Bird watching Birds--Migration Dial-a-message telephone calls 1989-03-13 1989-03-14
Iowa Birdline update, March 26, 1990 Field notes Bird watching Birds--Migration Anseriformes | Ducks, Geese, and Swans Waterfowl Dial-a-message telephone calls 1990-03-26 N/A
Iowa Birdline update, March 27, 1989 Field notes Bird watching Birds--Migration Passeriformes | Perching-birds and songbirds Waterfowl Dial-a-message telephone calls 1989-03-27 N/A
Iowa Birdline update, March 5, 1990 Field notes Bird watching Birds--Migration Icteridae | Blackbirds, Orioles, Meadowlarks, and allies Anseriformes | Ducks, Geese, and Swans Waterfowl Dial-a-message telephone calls 1990-03-05 N/A
Iowa Birdline update, May 13-18, 1989 Field notes Bird watching Birds--Migration Parulidae | Warblers Dial-a-message telephone calls 1989-05-13 1989-05-18
Iowa Birdline update, May 28, 1990 Field notes Bird watching Birds--Migration Birds--Nests Tyrannidae | Flycatchers Passeriformes | Perching-birds and songbirds Parulidae | Warblers Dial-a-message telephone calls 1990-05-28 N/A
Iowa Birdline update, November 6, 1989 Field notes Bird watching Birds--Migration Waterfowl Dial-a-message telephone calls 1989-11-06 N/A
Iowa Birdline update, October 22, 1990, notes Field notes Bird watching Birds--Migration Laridae | Gulls and Terns Charadriiformes | Shore-birds, Gulls, and Auks Waterfowl Dial-a-message telephone calls 1990-10-22 N/A
Peter C. Petersen letter to Vernon M. Kleen regarding spring migration 1971, June 5, 1971 Correspondence Bird watching Birds--Migration Tyrannidae | Flycatchers 1971-06-05 N/A
Peter C. Petersen letter to Woodward H. Brown, regarding fall migration 1975, December 9, 1975 Correspondence Field notes Bird watching Birds--Counting Birds--Migration 1975-12-09 N/A
Peter C. Peterson letter to Woodward H. Brown, regarding fall migration 1971, November 14, 1971 Correspondence Bird banding Bird watching Birds--Migration 1971-11-14 N/A
Annotated copy of Polk County check-list of the observations of members of the Des Moines Audubon Society, 1953 Checklists Field notes Bird watching Birds--Migration Birds--Research 1938-11-17 1959-12-31
Annotated copy of Polk County check-list of the observations of members of the Des Moines Audubon Society, 1959 Checklists Field notes Maps (documents) Bird watching Birds--Migration Birds--Research 1949-06-05 1973-04-17
Polk County check-list of the observations of members of the Des Moines Audubon Society Checklists Field notes Maps (documents) Bird watching Birds--Migration Birds--Research 1973-11-01 1973-11-30