Blue-winged teal nesting success as related to land use
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Published source details
Burgess H.H., Prince H.H. & Trauger D.L. (1965) Blue-winged teal nesting success as related to land use. Journal of Wildlife Management, 29, 89-95.
Published source details Burgess H.H., Prince H.H. & Trauger D.L. (1965) Blue-winged teal nesting success as related to land use. Journal of Wildlife Management, 29, 89-95.
Actions
This study is summarised as evidence for the following.
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Employ grazing in natural grasslands Action Link |
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Employ grazing in natural grasslands
At Union Slough National Wildlife Refuge, Iowa, USA (Burgess et al. 1965), a replicated, controlled trial in 1959-1961 found that blue-winged teal Anas discors nests in grazed grasslands and hayfields had greater success rates than those in ungrazed areas (47% success for grazed areas vs. 46% in hayfields and 14% in ungrazed areas; a total of 111 nests were monitored). However, nesting density was higher in ungrazed areas (7 nests/ha) than in grazed areas (4 nests/ha) or hayfields (4/ha). Areas were moderately grazed (15 June-1 October), ungrazed, or hay-cut (July-August, after the main nesting period). Most nests were in Kentucky bluegrass Poa pratensis and alfalfa Medicago sativa.
