Title Genres Topics Date (Start) Date (End)
Iowa Breeding Bird Atlas checklist form Checklists Instructional materials Bird populations Bird surveys Bird watching Birds--Identification Environmental monitoring 1987-01-01 1987-12-31
Letter and bird sighting checklist from Robert and Valerie Jessen to Vernon M. Kleen, spring migration 1974 Checklists Correspondence Field notes Bird banding Bird populations Bird watching Birds--Behavior Birds--Nests Falconiformes | Hawks, Eagles, Falcons, Osprey, and Vultures 1974-03-01 1974-05-31
Bird sighting checklist, fall 1979 Checklists Field notes Bird populations Bird watching Birds--Identification 1979-08-01 1979-11-30