K Dixon 1951 Pipile fusces June 11 Strawberry Canyon, Alameda Co., Calif. — OVERCAST; CALM. At 9:45 am I was walking up the canyon along the paved road NE of the pool — I heard the loud call wilk wilk wilk of Aphelocoma and chattery calls of other birds. A compact group of birds flew along the row of oaks and acacias on the south side of the road, proceeding then downslope toward the east end of the pool. I crashed down the slope and noted, before the birds flew up, that the jay was raining blows on some object on the ground; several Brown Towhees on the ground around the jay gave chattering calls (which I did not record at the time). The jay flew to laurel at E end of pool (20 feet ± from position on ground); it was followed by at least 3 towhees and a 7 Black-headed Grosbeak. 2 other towhees flew to bank to north and gave call skree-yeer — . I couldn't see what jay had attacked and I moved away to E of laurel tree. The jay moved out along the branch & I could see nothing in its beak. It flew down to the foot of a bank W of where it had been (on level of edge of pool) and was mobbed by the towhees again. I ran over to the edge of the bank & looked down. The jay was attacking a juvenile towhee which had most of crown feathers missing but did not appear to be bleeding. My appearance alarmed the birds and simultaneously the juvenile towhee fluttered to weeds beside a heavy wire fence & made its way inside the fence & disappeared from my view (perhaps enabled to seek shelter as jay flew up). Three pairs of towhees involved in mobbing; one pair flew along bank to N. One member of one pair chased one member of a second pair in direction west of north side of pool; then both