124 University of California Publications in Zoology. |Vou.5 
the birds themselves. Two blows on the stub brought out the set- 
ting bird, which at once disappeared. After a while what proved 
to be the male nuthatch made his appearance with an insect in his 
mouth, an indication that the male feeds the female on the nest. 
The nest was a felted mass of rodent fur and plant down. There 
were seven slightly incubated eggs, measuring in inches: .60.48, 
60.47, .64.49, .65.49, .63.49, .62.50, and .65x.48. They 
are pure white, spotted with hazel and vinaceous-cinnamon. The 
spottings are most numerous and of largest size over the larger 
ends of the eggs. 
A very few pigmy nuthatches were noted at Bluff lake; but 
around Bear lake they were decidedly common. On the north 
slope of Sugarloaf they were common clear to the summit, 9800 
feet altitude, August 19, 1905. Many were seen at Saragossa 
springs on the northwest side of Gold mountain, August 26, 
but none were seen further towards the desert. Twelve speci- 
mens in all were taken. 
Baeolophus inornatus murinus Ridgway. San Diego Titmouse. 
This race of the plain titmouse was met with in but few 
places. At Cactus Flat, 6000 feet altitude, two specimens were 
secured and others seen in a clump of golden oaks on August 16 
and 17, 1905. I saw one in a golden oak on the north wall of 
the upper Santa Ana, about 5300 feet altitude, July 27, 1907. 
And I heard the note of a titmouse in Mountain Home eanon, 
August 22, 1907. 
Penthestes gambeli baileyae (Grinnell). 
Bailey Mountain Chickadee. 
The mountain chickadee was found practically everywhere 
there were coniferous trees. It was most plentiful in the Tran- 
sition zone, but ranged well above and somewhat below in places. 
On the upper Santa Ana it was an abundant species, and its 
clearly-whistled song of four notes, the two first pitched higher 
than the others, was a very familiar sound during June and July. 
A nest found June 17, 1905, near the mouth of Fish ereek, oc- 
cupied a vertical slit in a dead black-oak stub. The nest was 
not more than three feet from the ground and was made of soft, 
