BREWSTER: BIRDS OF THE CAPE REGION, LOWER CALIFORNIA. 127 
Xanthocephalus xanthocephalus (Bonar.). 
YELLOW-HEADED BLACKBIRD. 
Xanthocephalus icterocephalus Betp1nc, Proc. U. S. Nat. Mus., V. 1883, 546 (San 
José del Cabo). 
Xanthocephalus ranthocephalus Bryant, Proc. Calif. Acad. Sci., 2d ser., II. 1889, 294 
(San José del Cabo). 
This Blackbird is known to occur in the Cape Region only in autumn, 
winter, and early spring. At San José del Cabo Mr. Belding found it rare in 
April, and Mr. Frazar noted it as not common in September and October. The 
latter observer also met with a number of birds at Santiago in November and 
a single individual at La Paz on February 15. 
Mr. Bryant does not mention seeing the Yellow-headed Blackbird in the 
central or northern portions of Lower California, but cites Mr. Anthony as 
authority for the statement that it is “very common along the coast during 
migrations.” It probably does not pass the summer anywhere on the Penin- 
sula, for it is not known to breed south of Santa Barbara in California. It 
migrates into western Mexico, at least as far to the southward as Mazatlan. 
Agelaius phoeniceus sonoriensis Ripew. 
SONORAN RED-WING. 
Agelaius Barrp, Proc. Acad. Nat. Sci. Phila., 1859, 301, 305 (San José). 
Agelaeus phoeniceus (not Oriolus phoeniceus Reswanys) Bretpine, Proc. U. S. Nat. 
Mus., VI. 1883, 350 (La Paz and s.). 
Agelaius phoeniceus (not Oriolus phoeniceus LINNAEUS) BRYANT, Proc. Calif. Acad. 
Sci., 2d ser., II. 1889, 294 (San José de! Cabo). 
The form sonoriensis, as far as my material shows, is very distinctly char- 
acterized, especially in the female, which differs markedly at all seasons from 
the female of phoeniceus. The six specimens collected by Mr. Frazar agree 
closely in size and general coloring with specimens from northwestern Mexico, 
excepting that all three of my Lower California females have the capistrum, 
throat, and breast strongly tinged with salmon pink, a peculiarity which I do 
not find in Mexican birds. 
Mr. Frazar saw the first Sonoran Red-wings at San José del Cabo on August 
28, when an adult male was killed from a flock of about eighty. None were 
observed afterwards until October 30, when two old males were seen flying 
over the river. On November 4 two were shot from a flock of six, all of which 
seemed to be young birds. At Santiago one was seen on November 15, and 
five were noted on the 27th. Mr. Belding’s mention of A. phoeniceus, as rare 
iu the “vicinity of La Paz and southward,” doubtless relates to this form, 
which is replaced by the closely allied subspecies newtralis in the northern 
portions of the Peninsula, where A. tricolor and A. gubernator californicus have 
also been found. 
