. Nests and eggs of North American birds. Birds; Birds. 272 NESTS AND EOGS OF 404. WILLIAMSON'S SAPSTJCKER. Sphyrapicus thyroideus (Cass.) Geog. Dist.—Western United States, from and inclusiv© of the Rocky Mountains to the Pacific. This singular representative of the Sphyrapicus, has a distribution extending from the eastern slopes of the Rocky Mountains to the Pacific coast in Oregon aiid California. The male and female of this species are so different in coloration that they were for a long time considered sepa- rate species. Regions of coniferous trees seem to be the favorite haunts of Will
. Nests and eggs of North American birds. Birds; Birds. 272 NESTS AND EOGS OF 404. WILLIAMSON'S SAPSTJCKER. Sphyrapicus thyroideus (Cass.) Geog. Dist.—Western United States, from and inclusiv© of the Rocky Mountains to the Pacific. This singular representative of the Sphyrapicus, has a distribution extending from the eastern slopes of the Rocky Mountains to the Pacific coast in Oregon aiid California. The male and female of this species are so different in coloration that they were for a long time considered sepa- rate species. Regions of coniferous trees seem to be the favorite haunts of William- son's Woodpecker. Dr. Merrill notes it as not an uncommon resident in the vicinity ol Fort Klamath, Oregon, but shy and very suspicious. Two nests containing young were found June 20 in large dead pines; each were at a height of about sixty feet, and inaciiessible. Mr. Dennis Gale, who has given Major Bendire his observations on the habits of this species in the moun- tains of Colorado, says that the birds arf as often met with in moderately thick woods as in more open clearings. The nesting sites are excavated in the trunks of pine trees, at heights ranging from five to sixty feet or more. Fresh eggs may be looked for, according to altitude, from May 20 to June 15. At Fort Klamath, Major Bendire took the first set of eggs June 3, 1883. Five or six are laid. They are pure white, a trifle less lustrous than those of S. ruber, a little more elongated and pointed in shape, some approaching a distinct ovate-pyriform or pear shape, a characteristic not apparently found in the eggs of other species of the same genus. Major Bendire gives the average size of seventeen specimens as .; the largest, ; the smallest,, . 405. PILEATED WOODPECKER. Ceoplilwus pUeatus (Linn.) Geog. Dist.— Formerly entire North America in heavily-wooded districts, south of latitude 63°, except in the southern Rocky Mountains; now rare or extirpated in the thickly settled part of E
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