Title Genres Topics Date (Start) Date (End)
Photograph of Frederic Leopold and a hunting dog Photographs Winter Hunting 1978-01-01 1978-12-31
Photograph of Wood Duck ducklings swimming Photographs Birds--Research Ducklings Wood duck--Behavior 1971-06-01 1977-06-30
Photograph of Wood Duck ducklings swimming among plants in water Photographs Birds--Research Ducklings Wood duck--Behavior 1977-06-01 1977-06-30
Photograph of mother Wood Duck and ducklings inside a duck house Photographs Birds--Research Birdhouses Ducklings Wood duck--Behavior 1971-06-01 1977-06-30
Photograph of Wood Duck ducklings in a duck house Photographs Birds--Research Birdhouses Ducklings Wood duck--Behavior 1977-05-01 1977-05-31
Photograph of bird watchers at Hendrickson Marsh Photographs Bird watchers 1974-01-01 1974-12-31
Photograph of a Wood Duck duckling diving from a duck house Photographs Birds--Research Birdhouses Ducklings Wood duck--Behavior 1971-07-01 1971-07-31
Photograph of a Wood Duck duckling in a duck house Photographs Birds--Research Birdhouses Ducklings Wood duck--Behavior 1971-07-01 1971-07-31
Photograph of a mother Wood Duck diving from a duck house Photographs Birds--Habitat Birds--Research Birdhouses Wood duck--Behavior 1971-07-01 1971-07-31
Photograph of a mother Wood Duck in a duck house Photographs Birds--Habitat Birds--Research Birdhouses Wood duck--Behavior 1971-07-01 1971-07-31
Photograph of three hatching Wood Duck eggs Photographs Birds--Eggs Birds--Research 1971-07-01 1971-07-31
Photograph of Wood Duck houses in trees Photographs Birds--Research Birdhouses 1971-05-01 1971-05-31
Wilson's Phalaropes nesting in Northwest Iowa Field notes Photographs Bird watching Birds--Identification Birds--Nests 1968-06-01 1968-06-30
Photograph of Frederic Leopold's house with a Wood Duck house in a tree Photographs Birds--Research Wildlife conservationists Birdhouses 1966-01-01 1966-12-31
Photograph of a Wood Duck duckling jumping from a duck house Photographs Birds--Research Birdhouses Ducklings Wood duck--Behavior 1966-01-01 1966-12-31
Photograph of a mother Wood Duck and ducklings walking on grass Photographs Birds--Research Ducklings Wood duck--Behavior 1966-01-01 1966-12-31
Photograph of mother Wood Duck sitting on eggs in a duck house Photographs Birds--Eggs Birds--Research Birdhouses Eggs--Incubation Wood duck--Behavior 1966-01-01 1966-12-31
Photograph of Wood Duck eggs and nesting material in a duck house Photographs Birds--Eggs Birds--Research Birdhouses 1966-01-01 1966-12-31
Photograph of Wood Duck eggs under down feathers Photographs Birds--Eggs Birds--Research Birdhouses Wood duck--Behavior 1966-01-01 1966-12-31
Photograph of a mother Wood Duck and ducklings inside a duck house Photographs Birds--Research Birdhouses Ducklings Wood duck--Behavior 1966-01-01 1966-12-31
Photograph of a Wood Duck house in tree near the Mississippi River Photographs Birds--Habitat Birds--Research Birdhouses 1966-01-01 1966-12-31
Photograph of paper covering the entrance to a Wood Duck house Photographs Birds--Research Ornithology--Methodology Birdhouses--Design and construction 1966-05-01 1966-05-31
Photograph of a mother Wood Duck sitting on eggs in duck house Photographs Birds--Research Birdhouses Eggs--Incubation Wood duck--Behavior 1966-05-01 1966-05-31
Photograph of Wood Duck eggs beginning to hatch Photographs Birds--Eggs Birds--Research 1966-05-01 1966-05-31
Photograph of Wood Duck ducklings nesting among egg shells and nesting material Photographs Birds--Eggs Birds--Research Ducklings 1966-05-01 1966-05-31