Title Genres Topics Date (Start) Date (End)
Piping Plover sightings at IPL settling ponds in 1983 Field notes Reports Bird surveys Bird watching Birds--Counting Birds--Habitat Birds--Nests Ornithology--Bibliography 1983-06-01 1983-07-31
Birds of Polk County Iowa Reports Publications (documents) Bird surveys Ornithology--Bibliography Ornithology--Methodology 1931-10-01 1931-10-31