Title Genres Topics Date (Start) Date (End)
Gladys Black letter to Nicholas S. Halmi regarding bird sightings, June 2, 1977 Correspondence Field notes Bird declines Bird populations Bird watching Birds--Eggs 1977-06-02 N/A
Richard Jule Hollis letter to Thomas H. Kent regarding Cliff Swallows, August 14, 1980 Correspondence Reports Birds--Counting Birds--Eggs Birds--Nests 1980-08-14 N/A
Frederic Leopold letter to Don Joffray regarding Wood Duck houses and nest predation, April 25, 1966 Correspondence Birds--Eggs Birds--Nests Birdhouses--Design and construction Predatory animals Raccoon--Behavior 1966-04-25 N/A
Don Joffray letter to Frederic Leopold regarding Wood Duck houses and nest takeover and predation, April 20, 1966 Correspondence Birds--Eggs Birds--Nests Birdhouses--Design and construction Predatory animals Squirrels--Behavior Raccoon--Behavior 1966-04-20 N/A
Frederic Leopold letter to Stella M. Perkins regarding Wood Duck houses, May 19, 1966 Correspondence Birds--Eggs Birdhouses--Design and construction Bird attracting Raccoon--Behavior 1966-05-19 N/A
Field notes contributed by Barbara L. Wilson, July 28, 1986 Correspondence Field notes Bird watching Birds--Behavior Birds--Eggs Birds--Food Birds--Nests Birdsongs Birds--Infancy 1986-07-28 N/A