Patelka 1948 28 Aphelocoma Aug. 31 Santa Cruz Island, California 9 a.m. Pair of adults observed about 1-3/4 mi. SW of camp in main canyon. Feeding quietly in upper branches of oak, moving about liesurely, sitting quietly for periods of a minute or so, preening themselves occa- sionally, then picking insects off the side of a main vertical branch or climbing up into the twiggerly and picking an acorn which was then pounded. The twobirds moved about within a few feet of each other, one occasionally following the other out of curiosity when the latter found some food item and repeating the search. In their movements through the branches, they do not seem to be heavier or slower than the mainland birds. 9:10 a.m. A third jay flew downslope, perched momenta- riely in a dead tree overlooking the canyon live oaks, th then joined the pair under observation. A short chase occurred immediately. I could not see the birds for a few moments; then a second chase of some distance took place up canyon, the chasing bird calling kra-kra-kra-kra loudly. One of the pair, presumably the female, did not leave and continued to feed. I heard three series of kra-kra notes after the second chase, given nearby from the direction in which chasing jays flew, but could not see them.About two minutes after the last series of notes, the jay returned and resumed feeding. 9:20 a.m. Feeding now on ground in among grass and Symphoricarpos where the oaks are low, but open beneath and where there is a good litter. 9:25. Moved on to other side of ridge. When I rounded end of the ridge, there were three jays, one of them a bird of the year in an early stage of p-j molt. All three drank from a pool in the stream bed, though not all at once. The young bird was at times no more than 2 or 3 yards from the other jays, but no chase ensued. The latter presently moved along the slope down canyon, leaving the young bird alone. 10 a.m. Another pair of adults located farther upstream. Male called alarmedly as I approached, female stayed be- hind, and as the male called, she gave the frog note and bobbed several times.simultaneously. Later. A jay ended a frog note with several notes best recorded as ik-ik-ik.