Gary Krapu, PhD (Former Employee)
Science and Products
Filter Total Items: 105
Marsh nesting by mallards Marsh nesting by mallards
Nest-site selection by mallard (Anas platyrhynchos) hens was studied on a 52-km2, privately owned area in the Missouri Coteau of south-central North Dakota during 1974-77. Sixty-six percent of 53 nests initiated by radio-marked and unmarked hens were in wetlands in dense stands of emergent vegetation and usually within 50 m of the wetland edge. These findings and other sources of...
Authors
Gary L. Krapu, L.G. Talent, T.J. Dwyer
Age-related aspects of mallard reproduction Age-related aspects of mallard reproduction
Abstract has not been submitted
Authors
Gary L. Krapu, Harold A. Doty
Last chance to save a priceless heritage Last chance to save a priceless heritage
Abstract has not been submitted
Authors
Gary L. Krapu
A remote controlled system for capturing nesting waterfowl A remote controlled system for capturing nesting waterfowl
Abstract has not been submitted
Authors
Charles W. Shaiffer, Gary L. Krapu
Productivity of red-winged blackbirds in prairie pothole habitat Productivity of red-winged blackbirds in prairie pothole habitat
Abstract has not been submitted
Authors
Gary L. Krapu
Breeding bird populations of selected semipermanent wetlands in south-central North Dakota--1977 Breeding bird populations of selected semipermanent wetlands in south-central North Dakota--1977
Abstract has not been submitted
Authors
Gary L. Krapu, R.K. Green
Pintail reproduction hampered by snowfall and agriculture Pintail reproduction hampered by snowfall and agriculture
Abstract has not been submitted
Authors
Gary L. Krapu
Foods of juvenile, brood hen, and post-breeding pintails in North Dakota Foods of juvenile, brood hen, and post-breeding pintails in North Dakota
No abstract available.
Authors
Gary L. Krapu, G.A. Swanson
Yellow-crowned night herons sighted in North Dakota Yellow-crowned night herons sighted in North Dakota
Abstract has not been submitted
Authors
Dennis G. Jorde, Gary L. Krapu, R.K. Green
Experimental responses of mallards and Canada geese to tribromoethanol Experimental responses of mallards and Canada geese to tribromoethanol
Abstract has not been submitted
Authors
Gary L. Krapu
Some nutritional aspects of reproduction in prairie nesting pintails Some nutritional aspects of reproduction in prairie nesting pintails
The nutritional significance of invertebrate foods in the diet of breeding hen waterfowl during the period of egg formation is discussed. Proximate, elemental, and amino acid analyses of the principal foods consumed by hen pintails (Anas acut) during the nesting season indicate the animal foods selected are rich sources of protein and calcium, whereas plant foods tested were low in...
Authors
Gary L. Krapu, G.A. Swanson
Foods of breeding pintails in North Dakota Foods of breeding pintails in North Dakota
Food habits of breeding pintails (Anas acuta) were studied relative to sex, land use, and reproductive condition during the spring and summer of 1969, 1970, and 1971 in eastern North Dakota. Hens and drakes, respectively, consumed 79.2 percent and 30.0 percent animal matter on nontilled wetlands and consumed 16.6 percent and 1.1 percent animal matter on tilled wetlands. Aquatic dipterans
Authors
Gary L. Krapu
Science and Products
Filter Total Items: 105
Marsh nesting by mallards Marsh nesting by mallards
Nest-site selection by mallard (Anas platyrhynchos) hens was studied on a 52-km2, privately owned area in the Missouri Coteau of south-central North Dakota during 1974-77. Sixty-six percent of 53 nests initiated by radio-marked and unmarked hens were in wetlands in dense stands of emergent vegetation and usually within 50 m of the wetland edge. These findings and other sources of...
Authors
Gary L. Krapu, L.G. Talent, T.J. Dwyer
Age-related aspects of mallard reproduction Age-related aspects of mallard reproduction
Abstract has not been submitted
Authors
Gary L. Krapu, Harold A. Doty
Last chance to save a priceless heritage Last chance to save a priceless heritage
Abstract has not been submitted
Authors
Gary L. Krapu
A remote controlled system for capturing nesting waterfowl A remote controlled system for capturing nesting waterfowl
Abstract has not been submitted
Authors
Charles W. Shaiffer, Gary L. Krapu
Productivity of red-winged blackbirds in prairie pothole habitat Productivity of red-winged blackbirds in prairie pothole habitat
Abstract has not been submitted
Authors
Gary L. Krapu
Breeding bird populations of selected semipermanent wetlands in south-central North Dakota--1977 Breeding bird populations of selected semipermanent wetlands in south-central North Dakota--1977
Abstract has not been submitted
Authors
Gary L. Krapu, R.K. Green
Pintail reproduction hampered by snowfall and agriculture Pintail reproduction hampered by snowfall and agriculture
Abstract has not been submitted
Authors
Gary L. Krapu
Foods of juvenile, brood hen, and post-breeding pintails in North Dakota Foods of juvenile, brood hen, and post-breeding pintails in North Dakota
No abstract available.
Authors
Gary L. Krapu, G.A. Swanson
Yellow-crowned night herons sighted in North Dakota Yellow-crowned night herons sighted in North Dakota
Abstract has not been submitted
Authors
Dennis G. Jorde, Gary L. Krapu, R.K. Green
Experimental responses of mallards and Canada geese to tribromoethanol Experimental responses of mallards and Canada geese to tribromoethanol
Abstract has not been submitted
Authors
Gary L. Krapu
Some nutritional aspects of reproduction in prairie nesting pintails Some nutritional aspects of reproduction in prairie nesting pintails
The nutritional significance of invertebrate foods in the diet of breeding hen waterfowl during the period of egg formation is discussed. Proximate, elemental, and amino acid analyses of the principal foods consumed by hen pintails (Anas acut) during the nesting season indicate the animal foods selected are rich sources of protein and calcium, whereas plant foods tested were low in...
Authors
Gary L. Krapu, G.A. Swanson
Foods of breeding pintails in North Dakota Foods of breeding pintails in North Dakota
Food habits of breeding pintails (Anas acuta) were studied relative to sex, land use, and reproductive condition during the spring and summer of 1969, 1970, and 1971 in eastern North Dakota. Hens and drakes, respectively, consumed 79.2 percent and 30.0 percent animal matter on nontilled wetlands and consumed 16.6 percent and 1.1 percent animal matter on tilled wetlands. Aquatic dipterans
Authors
Gary L. Krapu