FEB13 U.C. Poultry Husbandry Bldg, Berkeley, Alameda Co., Calif. PINE SISKIN (SPINUS PINUS) 1:20 PM - SAW FLOCK (75?) HANGING ON, EATING LAST YEAR'S SEED CATKINS OF SOME TYPE OF TREES, WHICH HAD BEEN UPROOTED & LAY ON STREAM BANK. OTHERS OF FLOCK CARRYING ON SOME WAY, HANGING HALF UPSIDE DOWN, IN STILL-STANDING TREES OF SAME TYPE. BIRDS ALL HEAVILY STREAKED ABOUT Y BELOW EXCEPT FOR LOWER BELLY & V'ITAL COVERTS. WING BARS ON 4 OR 5 OF THEM DEFINITELY YELLOW-SH BUT BARS ON OTHERS MORE WHITISH. FLOCK FLOW OFF IN 3 SECTIONS TO CIRCLE & FLY INTO OTHER TREES OF SOME TYPE FURTHER UP HILL. CALL NOTES SEEP-SEEP-ETC GIVEN BY FLOCK WHILE IN FLIGHT. FAIRLY QUIET BUT ACTIVE WHEN IN TREES. SEVERAL TIMES FLOCK (OR PART OF IT) FLEW OFF TO CIRCLE A SHORT DISTANCE & REENTER SOME TREE. 1:50 PM - FLOCK (SOME AT 1:20PM?) SEEN IN POS OF SEVERON BARE TANN TREES; SOME OF BIRDS SITTING WITHIN 8' OF SPARROW HAWK. NEITHER SEEMED CONCERNED. FLOCK CIRCLED AND CAME BACK TO SAME TREE BUT HAWK DIDN'T MOVE. THEN HAWK FLEW OFF WITH NO CALL & SISKINS WERE NOT DISTURBED. AT 2:00 PM, THEY FLEW ALSO GIVING SOME "SEEPS" IN FLIGHT ESPECIALLY WHEN JUST TAKING OFF.