T.iSo Merrill on Birds of Fo>t Klamath^ Oregon. [October 



very tame and unsuspicious; it is an expert fljcatcher, and also feeds 

 much on the ground. The nests are usually placed on the horizontal 

 branch of a fir or pine, sometimes but a few feet from the ground, at 

 others fifty or sixty feet above it. One nest found just outside the Fort 

 was in a young aspen about six feet from the ground ; the foundation was 

 a mass of dry twigs, the lining being of rootlets and horsehairs; the 

 internal diameter was three, the depth one and a half inches. On June 20 

 the full complement of eggs was three, averaging .91 X .63 inches; the 

 ground color is a clear green, sparingly spotted with brown which in one 

 specimen forms a ring at the larger end. 



Petrochelidon lunifrons. — Common, nesting abundantly in the build- 

 ings about the Fort. 



Chelidon erythrogaster. — Common. 



Tachycineta bicolor. — Arrived April 4 in small flocks, and was common 

 by the middle of the month; breeds. 



Tachycineta thalassina. — Very common at the outlet of Diamond Lake 

 early in August. Not noted in the immediate vicinity of the Fort, but 

 undoubtedly occurs there. 



Stelgidopteryx serripennis. — A few pairs breed in the banks of the 

 streams near the Fort, but there are few suitable places, as the edges of 

 the streams are usually low and grassy. Nests examined June iS con- 

 tained half-fledged young; the burrows were about two feet in length, and 

 were much larger than those dug by the Bank Swallow. 



Ampelis cedrorum. — Three seen on May 25. 



Lanius ludovicianus excubitorides. — Seen occasionally during autumn 

 and early winter. [No specimens taken. The form should pe-'haps stand 

 as /-. I. gambeli.—\N. B.] 



Vireo gilvus swainsoni. — The Western Warbling Vireo arrives about the 

 middle of May, two weeks later than does the next species, and both are very 

 abundant during the summer; nowhere have I found any Vireo so com- 

 mon as are these species at Fort Klamath. They are readily identified by 

 their notes, which are characteristic and quite unlike. The present species 

 is partial to aspens, almost every group of which is the home of one or 

 more pairs. 



Vireo solitarius cassinii. — Unlike most Vireos this one, as observed at 

 Fort Klamath, shows a marked predilection for pines and firs, and is found 

 almost everywhere among these trees. It is also found, but much less 

 frequently, in aspen groves with the Warbling Vireo. The nests are built 

 in low manzanita or buck-brush bushes that grow throughout the pine 

 woods. 



Helminthophila celata lutescens. — First seen and several specimens ob- 

 tained on May 5 ; the}' soon became common, and rapidly passed on to the 

 north, though a few remained to breed. 



Helminthophila ruficapilla gutturalis. — First taken May 26. The loud 

 song of the males betrays their presence and abundance, but they are 

 restless, shv, and very difficult to shoot. The song has some resemblance 

 to that of the Yellow Warbler, but once recognized it cannot be mistaken. 

 This species is quite common during the breeding season, preferring 



