Production of mallards on irrigated land in the Sacramento Valley

Author(s)
Earl, John P.
Year
Article Title
Production of mallards on irrigated land in the Sacramento Valley
Address
Berkeley, CA
Pages
23
Start Page Number
23
Review

Datapoints

Displaying 1 - 7 of 7 datapoints.
Species: Mallard duck (Anas platyrhynchos)
Exposure Endpoint Type Endpoint Description Endpoint Value Sample Size Units Condition Life Cycle Stage Specific Location Range California Counties Type
Territory Size mean length of drainage ditch (5 ft wide) defended 70 8 ducks yd breeding Adult Conaway Ranch 48-95 Yolo Exposure Factor Datasets
Time of Hatching or Parturition peak hatching period May 16-29 Not Reported breeding Hatchling Conaway Ranch Yolo Exposure Factor Datasets
Population Density breeding density 396 396 pairs pairs/18000 acres breeding Adult Conaway Ranch Yolo Exposure Factor Datasets
Time of Nesting time from earliest clutch laid to last clutch hatched April-June Not Reported breeding Adult Conaway Ranch Yolo Exposure Factor Datasets
Hatching Success proportion of nests that hatched at least one egg 52 60 nests % breeding Adult Conaway Ranch Yolo Exposure Factor Datasets
Clutch or Litter Size mean clutch size 8.37 40 nests eggs breeding Adult Conaway Ranch 7-10 Yolo Exposure Factor Datasets
Population Density 0.72 Not Reported ducks/acre non-breeding Both Adults and Juveniles Conaway Ranch Yolo Exposure Factor Datasets

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