Title Genres Topics Date (Start) Date (End)
Tri-city Bird Club daily field card compiled by Peter C. Petersen and Dale Birkenholz, May 29, 1956 Checklists Bird watching Birds--Counting Birds--Identification Anseriformes | Ducks, Geese, and Swans Ornithology--Methodology Scolopacidae | Sandpipers, Phalaropes, and allies 1956-05-29 N/A
Documents regarding the 1977 Ames Audubon Christmas Bird Count Checklists Field notes Forms (documents) Instructions (document genre) Bird surveys Bird watching Birds--Counting 1977-01-01 1977-12-31
Special spring bird census flyer Correspondence Fliers (printed matter) Bird surveys Bird watching Birds--Counting Birds--Migration 1970-05-10 N/A
Big Bluestem Audubon Society Birdathon flyer Fliers (printed matter) Bird surveys Bird watching Birds--Counting 1998-05-09 N/A
Fall, early spring, and late spring migration dates for Iowa Administrative records Field notes Bird watching Birds--Counting Birds--Identification Birds--Migration Anseriformes | Ducks, Geese, and Swans Tyrannidae | Flycatchers Parulidae | Warblers N/A N/A