Title Genres Topics Date (Start) Date (End)
Lantern slide of Owl pellets Lantern slides Bird droppings Strigiformes | Owls N/A N/A
Lantern slide and photograph of mice found in Barred Owl nest Lantern slides Photographs Birds--Food Bird droppings 1929-04-13 N/A
Photograph of the contents found in a Great Horned Owl nest Photographs Birds--Food Bird droppings 1935-04-04 N/A
Clarence Cottam letter to Walter Rosene regarding the analysis and contents of Long-eared Owl pellets, May 28, 1936 Correspondence Reports Birds--Research Ornithology--Methodology Bird droppings 1936-05-28 N/A
Field notes contributed by Paul Martsching, summer 1996 Field notes Bird watching Birds--Behavior Birdsongs Bird droppings 1996-06-01 1996-07-31