Plate I
Williamson's Sapsucker Sphyrapicus thyroideus
(Figure on left, male; on right, female)

By LEANDER S. KEYSER

AUTHOR OF "IN BIRD LAND," ETC.

With Eight Full-page Plates (four in color)
by Louis Agassiz Fuertes; Many Illustrations
in the Text by Bruce Horsfall, and
Eight Views of Localities from Photographs

WITH A COMPLETE CHECK-LIST
OF COLORADO BIRDS

CHICAGO · A. C. McCLURG AND CO.
NINETEEN HUNDRED AND TWO