Habitat use and productivity of harlequin ducks in the central Cascade Range of Oregon

Harlequin duck surveys in western Montana

James D. Reichel

Distribution and status of the harlequin duck, Histrionicus histionicus [sic] on the Gallatin National Forest, Montana

Darrell Markum

Results of stream surveys for Harlequin ducks in the Gallatin and a section of the Custer National Forests, Montana

Darren D. Johnson

Harlequin duck monitoring in the northern east slopes of Alberta

Jeff Kneteman

Harlequin duck surveys of the Oldman River basin

Dale Paton

Harlequin duck in New Brunswick

A. D. B. Heward

Le canard arlequin au Nouveau-Brunswick

A. D. B. Heward

Harlequin duck surveys in the central eastern slopes of Alberta, spring 1998

Paul Grégoire

Breeding habitat of harlequin ducks in Prince William Sound, Alaska

David W. Crowley