Jan., 1914 
SECOND LIST OF BIRDS OF THE BERKELEY CAMPUS 
.17 
Cassin VirLo. Lanivireo solitarius cassini. Rare summer visitant. In 
June, 1909, a pair was evidently nesting along vStrawberry Creek near the Faculty 
Club. The male was in full song, and was closely observed on several occasions. 
IduTTON ViRko. Vireo huttoni huttoni. Common resident of the live-oaks 
u]) Woolsey and Strawberry Creek canyons. Occasional pairs occur among the 
oaks on the low'er Campus. The peculiar nuptial song is heard as early as Feb- 
rnaiy 15. 
Cala\'Er.\s Warbler. Vermivora ruficapilla g'utturalis. Rare transient. 
Two were closely observed as they foraged through the foliage of bay trees and 
willows in the head of a ravine near Grizzly Peak, September 15, 1912 ( J. G. ). 
Lutescent Warbler. Vermivora eelata lutescens. Common summer vis- 
itant. Arrives early; March 21. 1906 (A. S. A.) ; March 19, 1911, and March 
15, 1912 (T. I. S.) ; March 5, 1913 ( H. C. B.). Remains well into September; 
latest date, September 25, 1908 (J. G. ). A forager chiefly m the foliage of live- 
oaks both among the hills and down on the Campus proper ; but nests are located 
exclusively along creek-banks. A nest found June 12. 1913, was ensconced in a 
cavity of the ground among dead leaves and vines on the wall of the creek 
within ten feet of the foot-hridge near the Center Street entrance. There were 
three fresh eggs at this date (J. G. ). 
California YELIo^^' Warbler. Dendroica aestiva brewsteri. Common 
summer visitant. Dates of arrival; April 2T, 1911 (A. S. A. ) ; April 12, 1912, 
and April i, 1913 (T. 1 . S.). Remains regularly until the middle of September, 
at wdiich time small companies affect the tree-tops, "chipping” loudly, esiiecially 
towards sunset. Late dates; Septemher 25, 1908, and September 17, 1910 ( J. G.). 
This warbler is partial to decidnous foliage, and its shrill song ma)^ often be 
heard from the elm-trees which line many of Berkeley’s streets. 
Alaska Myrtle Warbler. Dendroica coronata hooveri. In all probability 
occurs as a regular winter visitant ; but in winter plumage it is so similar to the 
Audubon Warbler, that the two species are doubtless often confounded. But 
after the spring molt sets in, sharp distinctions in coloration become apparent. 
Myrtle Warblers have been seen in numbers in April, foraging in the new foliage 
of live-oaks around the Museum building. Exact dates were; April 13, 14 and 
15, 1912 (J. G. and T. I. S.) ; March 30 and April 21, 1913 (J. G. ). 
Audubon Warleer. Dendroica anduboni andiiboni. Abundant winter visit- 
ant, affecting all sorts of trees, cha.parral, and even garden shrubbery. Frequently 
observed flv-catching about the windows and cornices of buildings in the heart 
of town. Dates of first observation in the fall; October 19, 1904, October 15, 
1906, and October 6, 1907 (A. S. xT. ) ; October 8, 1908, and October 9, 1910 
(J. G.) ; October 24, 1911, and September 30. 1912 (H. C. B.); September 
23, 1913 (T. I. S.). Latest date of observation in the spring. April 15, 1912 
(J- G.): 
Black-tttroaTEd Gr.\v Warbler. Dendroica nigrescens. Rare transient. 
Seen repeatedly in the oaks below Mosswood Road in September, 1912. First 
seen September 15, and small flocks remained in the vicinity for several days 
thereafter (A. S. A.). 
Townsend Warbler. Dendroica townsendi. Fairly common winter visitant, 
occurring as a tree-foliage forager, with predilections for live-oaks and conifers. 
Dates of arrival in the fall; October 2, 1904, October 10, 1906, September 29. 
1907, and October i, 1912 (A. S. A.); October 3, 1913 (M. W. W.). Dates of 
departure, as indicated by last seen; March 30, 191T, A]wil 12, 1912, and March 
30, 1913 (J. G.). 
