1908] Grinnell—Biota of the San Bernardino Mountains. 113 
was at Skinner’s on Mountain Home ereek, near its mouth, about 
4000 feet altitude. The nest was not more than 100 feet from 
Harvey’s dining-room, and was snugly tucked away in a small 
clump of mistletoe on an alder branch twelve feet above the 
ground. The female was sitting, and the tail protruding over 
the edge of the nest was sufficient identity, though to cinch the 
record I took the bird. This was the only bird of this species 
even seen below the pine belt.. The nest contained three eggs in 
which ineubation was far advanced, and was constructed as usual, 
there being a considerable proportion of feathers from Harvey’s 
chickens. 
The eggs of the Audubon warbler are distinctively colored. 
The ground color is distinctly pale Nile blue, though so pale as 
to warrant the description grayish-blue. The markings are 
chiefly in dense rings about the large ends of the eggs, and vary 
from large blotches to fine points. These markings vary in color 
from bistre through drab and eeru drab to pale lavender. Three 
sets measure as follows: .72.55, .70.54, .70.53; .69.55, 
(OD) < jo), Loe s<sy, A) <s5)s Aho < sr Loe < ash, fossa osc ae) 
Audubon warblers were not seen as low as Seven Oaks, though 
a short distance south of there, a few hundred feet higher, on 
the north. base of San Bernardino peak they were numerous. 
At Bluff lake the species was abundant in July, and again the 
last of August and up to September 4, when we left. -The first 
young out of the nest were noted there on July 17, and within a 
week many noisy families congregated in the willows about the 
meadows. A youngster barely half-grown was found on the 
ground July 24. The juvenal plumage is streaked dusky on a 
whitish ground, without a trace of yellow. But this plumage is 
of very short duration, not more than fifteen days, I should say, 
for it is then replaced by the first winter plumage, such as is worn 
by the majority of individuals we see in the valleys of California 
all winter. The majority of Audubon warblers at Bluff lake, 
September 1 to 3, judging from those shot, were adults. This 
accounts for the fact that all those shot down on the lower 
meadows, at Sugarloaf cienaga, for instance, were birds-of-the- 
year; and it lends support to the idea that it is really the young 
birds that become restless first and leave the breeding grounds. 
