Wallen, R. L. 1987. Habitat utilization by harlequin ducks 

 in Grand Teton National Park. M.S. Thesis, Montana 

 State University, Bozeman, MT. 67 pp. 



Wallen, R. L. and C. R. Groves 1988. Status and distribution 

 of harlequin ducks in northern Idaho. Idaho Dept . of 

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Wallen, R. L. and C. R. Groves 1989. Distribution, breeding 

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 northern Idaho. Idaho Dept. of Fish and Game, Boise, 

 ID. 3 9 pp. 



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