Title Genres Topics Date (Start) Date (End)
Letter from Ross Silcock to Iowa Ornithologists' Union regarding bird sightings and locations, August 11, 1976 Correspondence Field notes Bird watching Birds--Breeding Birds--Habitat 1976-11-08 N/A
W. Ross Silcock letter to Thomas H. Kent regarding bird sightings, May 31, 1980 Correspondence Field notes Bird watching Birds--Breeding Birds--Counting Birds--Habitat Birdsongs Fringillidae | Finches 1980-05-31 N/A
James L. Hansen letter to Doug Reeves regarding Great Blue Heron Rookery, May 2 1986 Correspondence Field notes Bird watching Birds--Breeding Birds--Nests 1986-05-02 N/A
Breeding Evidence Observations, Bob Cecil, 1985 Correspondence Field notes Bird watching Birds--Breeding Birds--Identification Rare birds 1985-06-20 1985-07-16