Photograph of Wood Duck eggs under down feathers
|
Photographs
|
Birds--Eggs Birds--Research Birdhouses Wood duck--Behavior
|
1966-01-01
|
1966-12-31
|
Manuscript, graphic, and printed material
|
The inside bottom of a Wood Duck house covered with nesting material, 1966. Wood Duck eggs are visible beneath the mother's down feathers.
|
Leopold, Frederic, 1895-1989
|
Wood Duck
|
Burlington
|
|
|
|
Frederic Leopold Papers | MS 113
|
6
|
8
|
Photograph of Wood Duck eggs beginning to hatch
|
Photographs
|
Birds--Eggs Birds--Research
|
1966-05-01
|
1966-05-31
|
Manuscript, graphic, and printed material
|
Three Wood Duck eggs in the early stages of hatching, May 1966
|
Leopold, Frederic, 1895-1989
|
Wood Duck
|
Burlington
|
|
|
|
Frederic Leopold Papers | MS 113
|
6
|
11
|
Photograph of Wood Duck eggs and nesting material in a duck house
|
Photographs
|
Birds--Eggs Birds--Research Birdhouses
|
1966-01-01
|
1966-12-31
|
Manuscript, graphic, and printed material
|
The inside bottom of a Wood Duck house covered in nesting material, 1966. Twelve Wood Duck eggs lay in the middle of the nesting material.
|
Leopold, Frederic, 1895-1989
|
Wood Duck
|
Burlington
|
|
|
|
Frederic Leopold Papers | MS 113
|
6
|
9
|
Photograph of Wood Duck ducklings swimming in a bucket
|
Photographs
|
Birds--Research Ducklings Wood duck--Behavior
|
1965-01-01
|
1965-12-31
|
Manuscript, graphic, and printed material
|
A bucket with eight Wood Duck ducklings swimming in a small amount of water, 1965.
|
Leopold, Frederic, 1895-1989
|
Wood Duck
|
Burlington
|
|
|
|
Frederic Leopold Papers | MS 113
|
6
|
6
|
Photograph of Wood Duck ducklings swimming among plants in water
|
Photographs
|
Birds--Research Ducklings Wood duck--Behavior
|
1977-06-01
|
1977-06-30
|
Manuscript, graphic, and printed material
|
A raft of Wood Duck ducklings swimming together among plants along a tree-lined stretch of water, June 1971.
|
Leopold, Frederic, 1895-1989
|
Wood Duck
|
Burlington
|
|
|
|
Frederic Leopold Papers | MS 113
|
6
|
18
|
Photograph of Wood Duck ducklings swimming
|
Photographs
|
Birds--Research Ducklings Wood duck--Behavior
|
1971-06-01
|
1977-06-30
|
Manuscript, graphic, and printed material
|
A raft of Wood Duck ducklings swimming together in open water, June 1971.
|
Leopold, Frederic, 1895-1989
|
Wood Duck
|
Burlington
|
|
|
|
Frederic Leopold Papers | MS 113
|
6
|
18
|
Photograph of Wood Duck ducklings nesting among egg shells and nesting material
|
Photographs
|
Birds--Eggs Birds--Research Ducklings
|
1966-05-01
|
1966-05-31
|
Manuscript, graphic, and printed material
|
Several Wood Duck ducklings nesting among hatched egg shells and other nesting material, May 1966.
|
Leopold, Frederic, 1895-1989
|
Wood Duck
|
Burlington
|
|
|
|
Frederic Leopold Papers | MS 113
|
6
|
10
|
Photograph of Wood Duck ducklings leaving the duck house
|
Photographs
|
Birds--Research Birdhouses Ducklings Wood duck--Behavior
|
N/A
|
N/A
|
Manuscript, graphic, and printed material
|
Two Wood Duck ducklings leaving the wooden Wood Duck house, 1965. One duckling is captured mid-flight as it leaves, and the other duckling is peeking out of the opening in the duck house.
|
Leopold, Frederic, 1895-1989
|
Wood Duck
|
Burlington
|
|
|
|
Frederic Leopold Papers | MS 113
|
6
|
6
|
Photograph of Wood Duck ducklings in a duck house
|
Photographs
|
Birds--Research Birdhouses Ducklings Wood duck--Behavior
|
1977-05-01
|
1977-05-31
|
Manuscript, graphic, and printed material
|
Several Wood Duck ducklings laying in nesting material on the inside bottom of a Wood Duck house, May 1971.
|
Leopold, Frederic, 1895-1989
|
Wood Duck
|
Burlington
|
|
|
|
Frederic Leopold Papers | MS 113
|
6
|
17
|
Photograph of three hatching Wood Duck eggs
|
Photographs
|
Birds--Eggs Birds--Research
|
1971-07-01
|
1971-07-31
|
Manuscript, graphic, and printed material
|
Three marked Wood Duck eggs that are just beginning to hatch, July 1971. A small tube of paint and a wax pencil are pictured below the eggs to give perspective on the size of the eggs.
|
Leopold, Frederic, 1895-1989
|
Wood Duck
|
Burlington
|
|
|
|
Frederic Leopold Papers | MS 113
|
7
|
1
|
Photograph of the inside bottom of a Wood Duck house
|
Photographs
|
Birds--Research Birdhouses
|
1965-01-01
|
1965-12-31
|
Manuscript, graphic, and printed material
|
The nesting material and other debris on the inside bottom of a wooden Wood Duck house, 1965.
|
Leopold, Frederic, 1895-1989
|
Wood Duck
|
Burlington
|
|
|
|
Frederic Leopold Papers | MS 113
|
6
|
7
|
Photograph of recently hatched Wood Duck ducklings and egg shells in a duck house
|
Photographs
|
Birds--Eggs Birds--Research Ducklings
|
1966-05-01
|
1966-05-31
|
Manuscript, graphic, and printed material
|
Several recently hatched Wood Duck ducklings intermixed with egg shells and other nesting material in a Wood Duck house, May 1966.
|
Leopold, Frederic, 1895-1989
|
Wood Duck
|
Burlington
|
|
|
|
Frederic Leopold Papers | MS 113
|
6
|
16
|
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
|
Manuscript, graphic, and printed material
|
A wooden Wood Duck house attached to the side of tree trunk, May 1966. The opening to the duck house is covered by a piece of paper that is fastened with string.
|
Leopold, Frederic, 1895-1989
|
Wood Duck
|
Burlington
|
|
|
|
Frederic Leopold Papers | MS 113
|
6
|
14
|
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
|
Manuscript, graphic, and printed material
|
A mother Wood Duck sits on top of nesting material inside a Wood Duck house, 1966. Three Wood Duck eggs are visible beneath her.
|
Leopold, Frederic, 1895-1989
|
Wood Duck
|
Burlington
|
|
|
|
Frederic Leopold Papers | MS 113
|
6
|
9
|
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
|
Manuscript, graphic, and printed material
|
A mother Wood Duck and several ducklings on the inside bottom of a duck house, June 1971.
|
Leopold, Frederic, 1895-1989
|
Wood Duck
|
Burlington
|
|
|
|
Frederic Leopold Papers | MS 113
|
6
|
18
|
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
|
Manuscript, graphic, and printed material
|
The house of Frederic Leopold located in Burlington, Iowa, situated overlooking the bluffs of the Mississippi River, 1966. A wooden Wood Duck house is attached to a tree located nearby the house.
|
Leopold, Frederic, 1895-1989
|
Wood Duck
|
Burlington
|
|
|
|
Frederic Leopold Papers | MS 113
|
6
|
8
|
Photograph of Frederic Leopold on a ladder checking a Wood Duck house
|
Photographs
|
Bird watchers Birds--Research Birdhouses
|
1965-01-01
|
1965-12-31
|
Manuscript, graphic, and printed material
|
Frederic Leopold on a ladder checking a wooden Wood Duck house that is attached to a tree trunk, 1965.
|
|
Wood Duck
|
Burlington
|
|
|
|
Frederic Leopold Papers | MS 113
|
6
|
5
|
Photograph of five hatching Wood Duck eggs
|
Photographs
|
Birds--Eggs Birds--Research
|
1971-06-01
|
N/A
|
Manuscript, graphic, and printed material
|
Five Wood Duck eggs that are just beginning to hatch, June 1971. A pencil is pictured below the five eggs to give perspective on the size of the eggs. A handwritten note on the back on the photograph indicates that this was the second day since the duckling eggs pipped, or cracked the shells.
|
Leopold, Frederic, 1895-1989
|
Wood Duck
|
Burlington
|
|
|
|
Frederic Leopold Papers | MS 113
|
7
|
5
|
Photograph of an adult Wood Duck leaving a duck house
|
Photographs
|
Birds--Research Birdhouses Wood duck--Behavior
|
1965-01-01
|
1965-12-31
|
Manuscript, graphic, and printed material
|
An adult Wood Duck leaving a wooden Wood Duck house that is attached to a tree, 1965
|
Leopold, Frederic, 1895-1989
|
Wood Duck
|
Burlington
|
|
|
|
Frederic Leopold Papers | MS 113
|
6
|
6
|
Photograph of a Wood Duck perched on a Wood Duck house
|
Photographs
|
Birds--Habitat Birds--Research Birdhouses
|
1960-01-01
|
1960-12-31
|
Manuscript, graphic, and printed material
|
A Wood Duck is perched on top of a wooden Wood Duck house that is attached to a tree trunk, 1960.
|
Leopold, Frederic, 1895-1989
|
Wood Duck
|
Burlington
|
|
|
|
Frederic Leopold Papers | MS 113
|
6
|
4
|
Photograph of a Wood Duck in a house
|
Photographs
|
Birds--Research Ornithology--Methodology Birdhouses--Design and construction
|
1965-01-01
|
1965-12-31
|
Manuscript, graphic, and printed material
|
A Wood Duck looks out of a string covered opening in a Wood Duck house, 1965. The string stretched across the bird house opening was used by Frederic Leopold to determine whether birds had entered or left the nest.
|
Leopold, Frederic, 1895-1989
|
Wood Duck
|
Burlington
|
|
|
|
Frederic Leopold Papers | MS 113
|
6
|
6
|
Photograph of a Wood Duck house in tree near the Mississippi River
|
Photographs
|
Birds--Habitat Birds--Research Birdhouses
|
1966-01-01
|
1966-12-31
|
Manuscript, graphic, and printed material
|
A wooden Wood Duck house attached to a tree located along the Mississippi River, 1966.
|
Leopold, Frederic, 1895-1989
|
Wood Duck
|
Burlington Mississippi River, Iowa
|
|
|
|
Frederic Leopold Papers | MS 113
|
6
|
8
|
Photograph of a Wood Duck house and an observation blind in front of Frederic Leopold's house
|
Photographs
|
Birds--Research Birdhouses
|
1960-01-01
|
1960-12-31
|
Manuscript, graphic, and printed material
|
A bare tree with a ladder leaning next to the Wood Duck house that is attached to the tree trunk, 1960. An observation blind is located close to the base of tree. Behind the tree and the blind is Frederic Leopold's house.
|
Leopold, Frederic, 1895-1989
|
Wood Duck
|
Burlington
|
|
|
|
Frederic Leopold Papers | MS 113
|
6
|
4
|
Photograph of a Wood Duck house
|
Photographs
|
Birds--Research Birdhouses
|
1960-01-01
|
1960-12-31
|
Manuscript, graphic, and printed material
|
A wooden Wood Duck house that is attached onto a tree trunk, 1960.
|
Leopold, Frederic, 1895-1989
|
Wood Duck
|
Burlington
|
|
|
|
Frederic Leopold Papers | MS 113
|
6
|
4
|
Photograph of a Wood Duck duckling jumping from duck house
|
Photographs
|
Birds--Research Birdhouses Ducklings Wood duck--Behavior
|
1966-05-01
|
1966-05-31
|
Manuscript, graphic, and printed material
|
A Wood Duck duckling jumping from a wooden Wood Duck house that is fastened to a tree trunk, May 1966.
|
Leopold, Frederic, 1895-1989
|
Wood Duck
|
Burlington
|
|
|
|
Frederic Leopold Papers | MS 113
|
6
|
16
|