Effect of a commonly-used nest marker on nest success of ducks in prairie Canada
Canadian Field-Naturalist
- By:
- R.J. Greenwood and A.B. Sargeant
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Abstract
We evaluated the effect of a flagged-stake marker on success of duck nests in the prairie pothole region of Canada, and whether abundance of American Crows (Corvus brachyrhynchos) influenced results. We marked 565 nests with flagged-stake markers and 573 in relation to natural objects (e.g., rock, tree, fence-post). We detected no difference in average daily survival rates between nests with flagged vs. natural markers (Xi?? = 3.37, 1 df, P = 0.07). Success rates averaged 10% for nests with flagged markers and 6% for nests with natural markers. The direction of the difference was consistent among areas and years (Xi?? = 19.9, 17 df, P = 0.28). We detected no correlation among areas and years between indices of American Crow abundance and differences in daily survival rates between nests with flagged markers and nests with natural markers (r = 0.02, 37 df, P = 0.91).Additional publication details
- Publication type:
- Article
- Publication Subtype:
- Journal Article
- Title:
- Effect of a commonly-used nest marker on nest success of ducks in prairie Canada
- Series title:
- Canadian Field-Naturalist
- Volume:
- 109
- Issue:
- 4
- Year Published:
- 1995
- Language:
- English
- Description:
- p. 437-440
- Larger Work Type:
- Article
- Larger Work Subtype:
- Journal Article
- Larger Work Title:
- Canadian Field-Naturalist
- First page:
- 437
- Last page:
- 440