Results of Harlequin Duck Histrionicus Histrionicus Surveys in Wilderness Area

Cover Results of Harlequin Duck Histrionicus Histrionicus Surveys in Wilderness Area
Results of Harlequin Duck Histrionicus Histrionicus Surveys in Wilderness Area
David N B Lee
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36 8/7/91 Wheeler Ck 0. 45 7 43 15 108. 36 8/18/91 Dol. V. Ck 2. 61 11 29 15 666. 07 8/20/91 Straw. Ck 1. 32 8 23 11 191. 36 23 conducted in the wilderness portions of FNF, it is not possible to estimate the relative abundance of harlequins in this area by comparing the number of sightings, broods and individuals over several breeding seasons.
CONCLUSIONS AND RECOMMENDATIONS Results of this study suggest harlequins are localized and uncommon in the wilderness portions of Flathead National Fores
...t. This is consistent with findings in similar studies conducted in northern Idaho and Montana (Wallen and Groves 1989, Carlson 1990) . Harlequins have been consistently reported in low number in the Rocky Mountain breeding areas (Wallen and Groves 1989, Carlson 1990, Kuchel 1977) . This inherent low density, combined with the extensive modification and loss of breeding habitat via human activities (such as dam building, stream-side development and water quality degradation) warrants a high level of protection for the Harlequin Duck and its remaining habitat.

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