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Abstract
The Mayfield method was used to estimate the survival rate of 19 radio-marked, female Black Ducks (Anas rubripes) in southcentral Maine during 1977-80. An overall survival rate of 0.74 was estimated for the 121-day monitoring period that included the pre-laying and laying, incubation, brood rearing, and post-rearing stages. No differences in survival rates were detected among these stages. Two instrumented hens were killed by Red-shouldered Hawks (Buteo lineatus) and a third was killed by an unknown predator. We found no evidence that the attachment of radio transmitters affected hen survival.
| Publication type | Article |
|---|---|
| Publication Subtype | Journal Article |
| Title | Survival of female black ducks, Anas rubripes, during the breeding season |
| Series title | Canadian Field-Naturalist |
| Volume | 97 |
| Issue | 1 |
| Year Published | 1983 |
| Language | English |
| Publisher | Ottawa Field-Naturalists' Club |
| Contributing office(s) | Patuxent Wildlife Research Center |
| Description | 4 p. |
| First page | 62 |
| Last page | 65 |
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