Results of Harlequin duck (Histrionicus histrionicus) surveys in 1990 on the Flathead National Forest, Montana
By: by John C. Carlson to the U.S.D.A. Forest Service, Flathead National Forest.
Contributors: Montana Natural Heritage Program.; Flathead National Forest (Agency : U.S.)
Publisher: Montana Natural Heritage Program
Published: 1990
Place of publication: Helena, MT
Language: eng
Number of pages: 32
Subjects: Ducks -- Montana -- Flathead National Forest.; Harlequin duck -- Montana -- Flathead National Forest.