Title Genres Topics Date (Start) Date (End)
Field notes contributed by Peter C. Petersen, summer 1992 Field notes Reports Bird populations Bird watching Birds--Behavior Birds--Counting Birdsongs 1992-06-01 1992-07-31
Christmas count, 1980-81 Field notes Reports Bird populations Bird surveys Bird watching Birds--Counting Birds--Identification Winter Citizen science 1980-12-20 1981-01-04
Field notes contributed by John Van Dyk, winter 1982-1983 Field notes Reports Bird declines Bird populations Bird watching Birds--Research Anseriformes | Ducks, Geese, and Swans Accipitridae | Hawks and Eagles Galliformes | Quails, Pheasants, Turkeys, and Grouse Weather 1982-12-01 1983-02-28
Field notes contributed by Dean Mosman, winter 1982-1983 Field notes Reports Bird declines Bird populations Bird watching Weather 1982-12-01 1983-02-28