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Anas platyrhynchos

Citation:

Use of prairie pothole habitat by breeding mallards

Author(s)
Dwyer, T.J., G.L. Krapu and D.M. Janke
Pages
526-531
Year
Issue
2
Volume
43
Exposure Endpoint Type Endpoint Value Endpoint Description Units Sex Life Cycle Stage Location Sample Size Type
Home Range 110.9 Breeding home range. ha Female Adult Missouri Coteau of south-central North Dakota 6 Exposure Factor Datasets
Citation:

Habitat use and home range of mallards breeding in Minnesota

Author(s)
Gilmer, David S., I.J. Ball, Lewis M. Cowardin, John H. Riechmann and John R. Tester
Pages
781-789
Year
Issue
4
Volume
39
Exposure Endpoint Type Endpoint Value Endpoint Description Units Sex Life Cycle Stage Location Sample Size Type
Home Range 210 Study area was 67% upland forest, 33% lakes and wetlands. ha Female Adult western edge of Chippewa National Forest, Beltrami Co. 12 Exposure Factor Datasets
Home Range 240 Study area was 67% upland forest, 33% lakes and wetlands. ha Male Adult western edge of Chippewa National Forest, Beltrami Co. 12 Exposure Factor Datasets
Home Range 135 Study area was 67% upland forest, 33% lakes and wetlands. ha Female Adult western edge of Chippewa National Forest, Beltrami County 8 Exposure Factor Datasets
Home Range 70 Study area was 67% upland forest, 33% lakes and wetlands. ha Female Adult western edge of Chippewa National Forest, Beltrami Co. 8 Exposure Factor Datasets
Citation:

Seasonal decline in brood sizes of sympatric waterfowl (Anas and Athya, Anatidae) and a proposed evolutionary explanation

Author(s)
Toft, Catherine A., David L. Trauger and Horatio W. Murdy
Pages
75-92
Year
Volume
53
Exposure Endpoint Type Endpoint Value Endpoint Description Location Sample Size Type
Time of Hatching or Parturition June 14 Average date of hatching for 3 years straight (1963-65) Northwest Territories, Canada 50 broods Exposure Factor Datasets
Citation:

Weights of wild mallard Anas platyrhynchos, gadwall A. strepera, and blue-winged teal A. discors during the breeding season

Author(s)
Lokemoen, John T., Douglas H. Johnson and David E. Sharp
Pages
122-130
Year
Volume
41
Exposure Endpoint Type Endpoint Value Endpoint Description Error Units Sex Life Cycle Stage Location Sample Size Type
Body Weight - Mean 49.3 egg weight 3.5 SD g Not Reported Embryo central North Dakota 27 Exposure Factor Datasets
Body Weight - Mean 32.4 2.4 SD g Both Male and Female Hatchling central North Dakota 36 Exposure Factor Datasets
Body Weight - Mean 1020 g Female Adult central North Dakota 173 Exposure Factor Datasets
Body Weight - Mean 973 g Female Adult central North Dakota 177 Exposure Factor Datasets
Body Weight - Mean 1206 g Male Adult central North Dakota 660 Exposure Factor Datasets
Citation:

Duck nesting in fields of undisturbed grass-legume cover

Author(s)
Duebbert, H.F. and J.T. Lokemoen
Pages
39-49
Year
Issue
1
Volume
40
Exposure Endpoint Type Endpoint Value Range Units Sex Life Cycle Stage Location Sample Size Type
Clutch or Litter Size 8.6 8.2-8.8 eggs Female Adult western Edmunds Co., South Dakota 100 Exposure Factor Datasets
Population Density 76.6 46.9 - 113.6 nests/km2 Both Male and Female Adult western edge of Edmunds Co., South Dakota Not Reported Exposure Factor Datasets
Citation:

Homing and reproductive habits of mallards, gadwalls, and blue-winged teal

Author(s)
Lokemoen, John T., Harold F. Duebbert and David E. Sharp
Pages
1-28
Year
Volume
106
Exposure Endpoint Type Endpoint Value Error Range Units Sex Life Cycle Stage Location Sample Size Type
Time of Nesting April 26 - June 6 prairie pothole region of North Dakota Not Reported Exposure Factor Datasets
Time of Migration or Dispersal May 5 - May 14 Female prairie pothold region of North Dakota Not Reported Exposure Factor Datasets
Time of Migration or Dispersal April 20 - May 14 Female Adult prairie pothole region of North Dakota Not Reported Exposure Factor Datasets
Clutch or Litter Size 8.49 1.23 SE eggs Female Adult prairie pothole region of North Dakota 57 Exposure Factor Datasets
Clutch or Litter Size 8.96 1.38 SE eggs Adult prairie pothole region of North Dakota 78 Exposure Factor Datasets
Population Density 3.62 0.6 - 7.6 breeding pairs/km2 Both Male and Female Adult Koenig study area Not Reported Exposure Factor Datasets
Population Density 4.72 3.1 - 8.7 breeding pairs/km2 Both Male and Female Adult Woodworth study area Not Reported Exposure Factor Datasets
Fledging or Weaning Rate 1.51 fully feathered young/hen Not Reported Juvenile prairie pothole region of North Dakota 74 hens Exposure Factor Datasets
Fledging or Weaning Rate 1.45 fully feathered young/hen Not Reported Juvenile prairie pothole region, North Dkota 41 hens Exposure Factor Datasets
Fledging or Weaning Rate 1.78 fully feathered young/hen Not Reported Juvenile prairie pothole region of North Dakota 22 hens Exposure Factor Datasets
Fledging or Weaning Rate 1.18 fully feathered young/hen Not Reported Juvenile prairie pothole region of North Dakota 11 hens Exposure Factor Datasets
Citation:

Age-related aspects of mallard reproduction

Author(s)
Krapu, Gary L. and Harold A. Doty
Pages
35-39
Year
Volume
30
Exposure Endpoint Type Endpoint Value Endpoint Description Error Units Sex Life Cycle Stage Location Sample Size Type
Body Weight - Mean 1,121.2 121.5 SD g Female Adult prairie pothole region central North Dakota 105 birds Exposure Factor Datasets
Body Weight - Mean 1,070.2 121.3 SD g Female Yearling prairie pothole region in North Dakota 44 birds Exposure Factor Datasets
Body Fat (total or %) 72.4 44.2 SD g lipid Female Adult prairie pothole region of North Dakota Not Reported Exposure Factor Datasets
Body Fat (total or %) 55.0 39.7 SD g lipid Female Yearling prairie pothole region of North Dakota Not Reported Exposure Factor Datasets
Clutch or Litter Size 9.3 1.7 SD eggs Female Yearling prairie pothole region in North Dakota 7 nests Exposure Factor Datasets
Clutch or Litter Size 10.3 1.1 SD eggs Female Adult prairie pothole region of North Dakota 46 nests Exposure Factor Datasets
Time of Mating/ Laying April 4 - July (median = May) time of clutch initiation Female Adult eastern - south central North Dakota, near Jamestown 265 nests Exposure Factor Datasets
Citation:

Waterfowl use of forested wetlands of the southern United States: An overview

Author(s)
Fredrickson, Leigh H. and Mickey E. Heitmeyer
Pages
307-323
Publisher
University of Minnesota Press
Year
Exposure Endpoint Type Endpoint Value Location Type
Dietary Composition Review Mingo Basin, Missouri Exposure Factor Datasets
Citation:
Exposure Endpoint Type Endpoint Value Range Units Sex Life Cycle Stage Location Sample Size Type
Time of Mating/ Laying April 10 (end) southern part of U.S. breeding range Exposure Factor Datasets
Time of Migration or Dispersal late February/early March (begin) to mid April (end) southern part of U.S. breeding range Exposure Factor Datasets
Time of Migration or Dispersal mid-October (begin) to December (end) southern part of U.S. breeding range Exposure Factor Datasets
Clutch or Litter Size 8 - 12 eggs Not Reported Not Reported Not Reported Exposure Factor Datasets
Clutches or Litters per year 1 Not Reported Not Reported Exposure Factor Datasets
Time of Mating/ Laying March 25 (begin) - May 20 (end) Not Reported Not Reported Exposure Factor Datasets
Time of Migration or Dispersal late August/early September (begin), September (peak) Not Reported Not Reported Exposure Factor Datasets
Dietary Composition beechnuts, acorns, and slugs, snails, frogs or lizards (occasionally) Not Reported Not Reported Central Valley Exposure Factor Datasets
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