Laguna Warine Laboratory 1938 
Petrochelidon lunifrons (Say.) Cassin. Cliff Swallow. 
Very abundant about overhanging cliffs bordering the valleys. 
They swarmed over the hills and along the beaches. At one place 
the under side of certain cliffs is completely covered with their nests. 
On July 1 two young birds were just about ready to fly. These birds 
are very lousy, being infested with Docophorus excisus var. major, 
Nirmus longus, Menopon malleus, and Menopon dissimilis. 
Lanius ludovicianus gambeli Ridgw. California Shrike. 
Abundant along all of the valley bottoms. Early in the morn- 
ings they were often heard singing a low sweet song, which rather 
belies their character. 
Vireo pusillus Coues. Least Vireo. 
These little birds were rather common in thickly wooded places. 
They were always very quiet and shy. 
Dendroica aestiva morcomi Coale. Western Yellow Warbler. 
Along the willow bottoms, and in the lower portions of the can- 
yons these birds appeared to be quite common. 
Mimus polyglottus leucopterus (Vigors) Mearns. Western Mockingbird. 
Very common in all the canyons and along the hills, and in those 
places very shy, which is surprising because they are quite bold in 
the towns. Seldom heard singing. 
Toxostoma redivivum pasadenense (Grinnell) Richmond. Pasadena 
Thrasher. 
Although this bird has been reported only from farther inland, 
a skin of certainly this form was taken here. 
Toxostoma redivivum (Gamb.) Baird. California Thrasher. 
These birds were very abundant everywhere. They are very 
bold, and set up a great clamor when disturbed. Seldom heard sing- 
ing. 
Catherpes mexicanus conspersus Ridew. 
Although C. m. punctulatus is more commonly reported from here 
I took a skin of this subspecies. It was critically examined by Mr. 
Chas. Metz and unquestionably determined as this form. 
Thyromanes bewickii charienturus Oberh. Southwest Bewick Wren. 
Fairly common in the canyons and among the chaparral-covered 
hills. Often observed in company with wren-tits. 
Chamaea fasciata Gamb. Pallid Wren-tit. 
Very common in all the valley bottoms. They were very bold 
and allowed very close inspection. 
