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Abstract
Blood samples were taken from 181 (108 adult drakes and 73 individuals of mixed age and sex) mallards, Anas platyrhynchos, from Colusa and Delevan National Wildlife Refuges during late winter and summer of 1987. The percentage of birds with elevated lead concentration was 28.7 for late winter and 16.4 for late summer. For summer trapped birds, a significantly greater proportion of males than females contained elevated lead levels. These findings indicate that lead poisoning may be a year-round event in certain areas of the Sacramento Valley.
Study Area
| Publication type | Article |
|---|---|
| Publication Subtype | Journal Article |
| Title | Blood lead concentrations in mallards from Delevan and Colusa National Wildlife Refuges |
| Series title | California Fish and Game |
| Volume | 76 |
| Issue | 3 |
| Year Published | 1990 |
| Language | English |
| Publisher | California Department of Fish and Game |
| Contributing office(s) | National Wildlife Health Center |
| Description | 5 p. |
| First page | 132 |
| Last page | 136 |
| Country | United States |
| State | California |
| Other Geospatial | Colusa National Wildlife Refuge, Delevan National Wildlife Refuge |
| Online Only (Y/N) | N |
| Additional Online Files (Y/N) | N |
| Google Analytic Metrics | Metrics page |