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

 Harlequin ducks ( Histrionicus histrionicus ) in northern 

 Idaho. Idaho Department of Fish and Game, Boise, ID. 34pp. 



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



biology and nesting habitat of harlequin ducks ( Histrionicus 

 histrionicus ) in northern Idaho. Idaho Department of Fish 

 and Game, Boise, ID. 3 9pp. 



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