92 PACIFIC COAST AVIFAUNA Nowee 
On Santa Cruz, A. van Rossem and I met with numbers of these warblers 
during April, 1911, and C. B. Linton (28) reported them very common there in 
November and December, 1907. J. Mailliard (16) says that the note of the birds 
he heard was longer and stronger than that of lutescens, with two louder addi- 
tional notes at the end of the trill. C. H. Townsend (9) mentions a specimen that 
was secured on Santa Rosa, January 7, 1889, and O. W. Howard (MS) says that 
he has observed this form on San Miguel. 
On a small peninsula near Coronado Beach, known as the Spanish Bight, 
and now the aviation camp, I noted many Dusky Warblers, and found three in- 
complete nests April 6, 1910. A. M. Ingersoll (MS) has also found nests at 
Point Loma, nearby. It occurs in limited numbers on the islands during the 
fall and winter, but the majority migrate to the mainland, where they may be 
found in the lowlands from the Mexican line to Santa Barbara County. 
The usual nesting site of the Lutescent Warbler is on the ground, but I have 
never heard of sordida building in such a situation. On the smaller barren isl- 
ands, such as the Coronados and Todos Santos (where it is common), they build 
in a bush or tangle of vines, a foot or so above the ground, and the nest is always 
mainly constructed of gray moss, where this is to be had, lined with a little fine 
grass. On the larger islands, where there are good-sized trees, the site chosen 
may be a thicket of vines several feet above the bed of a stream, a small shrub, 
say four feet up, or perhaps an oak as much as fifteen feet above the ground. In 
such case the nest is quite substantially made of leaves, twigs, bark, rootlets, and 
often a little sheep wool. Three or four eggs constitute a set, and at least two 
broods of young are raised each year. 
167. Dendroica coronata (Linnaeus) 
MyrtLe WARBLER 
7 
Dendroica coronata (1) Grinnell, Pasadena Acad. Sci., 1, 1897, p. 7. (2) Linton, Condor, 
x1, 1909, p. 194. (3) Willett, Pac. Coast Avif., 7, 1912, p. 96. 
Dendroica coronata hooveri (4) Grinnell, Pac. Coast Avif., 3, 1902, p. 64. (5) Grinnell, 
Pac. Coast Avif., 11, 1915, p. 147. 
Uncommon winter visitant to the islands. C. B. Linton (2) recorded this 
species as fairly common on San Clemente in the winter of 1908, and J. Grinnell 
(1) shot an adult female on Santa Barbara Island, May 15, 1897, the only one 
seen. 
168. Dendroica auduboni auduboni (J. K. Townsend) 
AUDUBON WARBLER 
Dendroica auduboni (1) Grinnell, Pasadena Acad. Sci., 1, 1897, p. 20. (2) Grinnell, Auk, 
Xv, 1898, p. 286. (3) Mailliard, Bull. Cooper Orn. Club, 1, 1899, p. 45. (4) Mearns, 
Bull. U. S. Nat. Mus., nvr, 1907, p. 142. (5) Richardson, Condor, x, 1908, p. 68. (6) 
Linton, Condor, x, 1908, p. 86. (7) van Rossem, Condor, x1, 1909, p. 208. (8) How- 
ell and van Rossem, Condor, xii, 1911, p. 210. (9) Grinnell, Pac. Coast Avif., 11, 
1915, p. 148. 
Audubon Warbler (/0) Grinnell, Bull. Cooper Orn. Club, 1, 1899, p. 17. 
