1908] Grinnell.—Biota of the San Bernardino Mountains. 83 
post-breeding plumage; other adults were seen closely, and I felt 
sure of also seeing full-grown juvenals. These could not pos- 
sibly have bred there; in fact I saw the species there but the 
once. They probably wandered up from San Gorgonio pass, a 
very short distance away horizontally, but 8000 feet below ver- 
tically, or else from Bear valley. 
Cyanocitta stelleri frontalis (Ridgway). Blue-fronted Jay. 
, This jay was unexpectedly scarce in many parts of the San 
Bernardino mountains, where conditions appeared to be of the 
sort to suit it. Only along the upper Santa Ana was it conspic- 
uously common. In the vicinity of Fish creek and South Fork, 
6200 to 6500 feet altitude, adults and full-grown young were 
noted in June and July along streams. Several old nests were 
noted in the willow thickets. 
They regularly robbed our mammal traps, and were very 
seldom caught themselves; we blamed them for robbing a nest of 
the gray flycatcher that we were watching. But in spite of such 
mischief they were extremely interesting visitors about camp. 
At our South Fork base camp, the jays were never molested, and 
they became very familiar, visiting our cook-table for anything 
eatable—and that was anything we could eat ourselves. One 
bird, in particular, was always recognizable by his peculiar note, 
which sounded like a creaking wheel-barrow or windmill. His 
presence was always announced by this unusual note, both in 
1906 and 1907. I have often heard this species give a squalling 
note like that of a red-tailed hawk, and occasionally one just like 
a sparrow hawk; but the South Fork camp jay had a note of 
his own. 
August 19, 1905, a company of blue-fronted jays were encoun- 
tered on the summit of Sugarloaf, at 9800 feet altitude. Speci- 
mens taken were still in full juvenal dress. A few were seen at 
7500 feet altitude, August 20 to 23, 1905, on the north side of 
Sugarloaf, feeding on service-berries. A very few were seen 
around Bear lake. 
This bird seems to be a strictly Transition zone species, as 
only the above recorded Sugarloaf station was outside. 
Ten examples were taken. 
