46 Pasadena Academy of Sciences. Publication If. 



to 6000 feet, and in the migrations occurring in considerable numbers 

 over the mesas and lowlands. The earliest noted was a male taken by 

 me, March 23 ('95), and by the second week in April they are present 

 in full force. H. A. Gaylord has the latest record, Oct. 23 ('95). Dur- 

 ing the breeding season, the scrub oak regions of the mountain sides 

 are the preferred haunts of this warbler. Most of the sets have been 

 taken about the last week of May, but I found a nest with four small 

 young, in the mountains north of Pasadena, May 19 ('95), and R- Ar- 

 nold took a set of three considerably incubated eggs in the same vicin- 

 ity, June 26 ('96). Four eggs constitute the usual set. 



263 — 668. Dendroica townsendi (Towns.). 



ToWQseod's Warbler. 

 Tolerably common migrant, though not regularly so. During the 

 last week of April, '96, it was fairly numerous in the vicinity of Pas- 

 adena, but in the spring of 1897 none were observed. The first noted 

 was on April 22, and the latest, May 13. In the fall I have taken one 

 specimen, Oct. 2 ('95)- A few probably pass the winter with us if the 

 weather is not severe. I saw several on Mt. Wilson, Dec. 12 ('96), 

 and took a specimen in the same locality, Jan. 27 ('94). 



264^ — 66g. Dendroica occidentalis (Towns.). 



Herroit Warbler. 



In the spring migrations this warbler is in some years tolerably 

 common, though not detected af all in others. In the .spring of '96 

 it was numerous about Pasadena. I noted the earliest, April 22, and 

 the latest, May 17. H. S. Swarth reports a specimen near Los Ange- 

 les, Sept. 10 ('97). 

 265 — 680. Geothlypis macgillivrayi (Aud.). 



Macgillivray's Warbler. 



This is a common spring migrant along the base of the foot-hills, 

 and in the fall in much smaller numbers out on the lowlands. It 

 arrives by the second week in April, and I have taken it as early as 

 April 4 ('96); the la.st was observed by H. A. Gaylord, May 13 ('96). 

 In the fall, H. S. Swarth has noted it in the vicinity of Los Angeles 

 from Sept. 4 ('97) to Oct. 13 ('96). 



266 — 68ia. Geothlypis trichas occidentalis Brewst. 

 Western Yellow-throat. 

 Common resident of marshy tracts throughout the lowlands, and 

 appears abundantly during the migrations along the foot-hills and on 

 the mesas. Breeds in April and May. Extremes: Set of four fresh 

 eggs taken by H. J. Leland near Pasadena, April 7 ('97); and a sim- 

 ilar set taken by H. A. Gaylord in the same locality, June 6 ('95). 

 Full sets are almost invariably of four eggs. 



267 — 68 ja. Icteria virens longicauda (Lawr.). 

 Long-tailed Cbat. 

 Common summer resident in the willow regions of the lowlands, 

 and in small numbers during the migrations along the foot-hills. The 

 earliest specimen noted in the vicinity of Pasadena, was a male, April 

 18 ('95). but they probably arrive on their breeding grounds some- 



