March, i8g8. Birds of the Pacific Slope of Los Angeles County. 47 



what earlier. F. S. Daggett took it as late in the fall as Sept. 29 ('96). 

 Breeds mostly during the latter part of May. Extremes: Set of four 

 fresh eggs taken near Pasadena by H. J. Leland, May 10 ('97), and a 

 similar set taken June 10 ('96), by H. Robertson near Los Angeles. 



268 — 685a. Sylvania pusilla pileolata (Pall.). 

 Pileolated Warbler. 

 Abundant migrant throughout the lower parts of the county, and 

 more or less common summer resident in the willow regions. Ap- 

 pears in numbers usually by the first week in April, though I took an 

 adult male near El Monte, Feb. 16 ('95); last in the fall, Oct. 27 ('94). 

 Breeds most commonly about the middle of May; A. I. McCormick 

 took a set of five fresh eggs near Los Angeles, April 28 ('97), and G. 

 F. Morcom took a set of four slightly incubated eggs at Cerritos, April 

 24 ('97); H. Robertson took a set of four fresh eggs in the former lo- 

 cality May 31 (97). 



269 — 6gy. Anthus pensilvanicus (Lath.), 



American Pipit. 



Abundant winter visitant in the lowlands; especially numerous 



and more generally distributed during the seasons of heavy rain-fall. 



My notes taken in the vicinity of South Pasadena and El Monte, give 



the earliest and latest, respectively, Aug. 29 ('95), and April 3 ('95). 



270 — yor. Cinclns mexicanus Swains. 



flmerican Dipper. 

 Met with in small numbers along streams in the mountainous 

 parts of the Con !ty. Resident throughout the year. H. Arnold took 

 a set of four sligiitly incubated eggs in Eaton's canon north of Pasa- 

 dena, April 22, '94, and the same collector found a nest with four 

 young in the San Gabriel canon, May 27, '94. 



271 — yo2. Oroscoptes tnontanus (Towns.). 



Sage Thrash)er. 

 Rare straggler from the Desert. H. S. Swarth secured a pair in 

 San Fernando Valley, March 13, '97. 



272 — yoj. Mimus polyg lottos (Linn.). 



Mockingbird. 

 Common and familiar resident of orchards and gardens through- 

 out the lower portion of the County, and of dry washes and arroyos in 

 the mesa regions. Breeds as a rule by the first of May. I took a set 

 of 4 considerably incubated eggs on April 16 ('95) which is my earliest 

 date, and as two or even three broods are reared in a .season, nesting 

 continues sometimes into August. Full .sets consist of four, larely 

 five eggs. 



273 — yio. Harperhynthus redivivus (Gamb.). 

 Califorrjiao Thrasher. 

 Common resident of brushy localities from the lowlands up to 

 6000 feet in the mountains. Breeds mainly in March and AppiJ. H. 

 J. Leland took a .set of 2 considerably incubated eggs near Pasadena 

 on January 27 ('97) which of course is exceptionally early. H. A. 



