RIBBLE,D.A 1988 PERSONOUS CALIFORNIUS (5) Hastings Reservation, Monterey Co., Calif. Feb 3. This morning we caught #1123, ?, pregnant, on transect west of guid RC at station 2,5. We put a radio-collar on her, with a plastic cable-tie collar, Ch #5. She escaped to the east towards the stream under a thicket of blackberry. On guid RC, caught #1152 ? at station 5,10 covered with fresh DRAWNTE Powder. 1530 hrs - Marco radio-tracked #1123 to the base of a Salix about 20m west of station 3,8 (approx ~3,6). The base is on a dropoff of about 1m, dropping down to the stream floodplain. It is ~2m east of the stream. Surrounding the salix is a dense thicket of Poison oak and blackberry. At the base of the salix there are several exposed tree roots, and one 30cm log which is hollow. A small (less than 10mm) tail drag of green powder is visible at the base. We set 4 Sherman traps around this site to try and catch her mate - #1967. 2030 hrs - we caught #1123's mate, #1967, at her nest site this PM. Marco put a collar on him with a plastic cable-tie collar, Ch #3. He escaped to the north about 2m and then headed west east into the blackberry-poison oak thickets. Unfortunately, Marco was unable to locate #1123 this PM - no signal was detected now or later around 2315 hrs. Feb 4. Caught #1123 on the drift fence west of RC this am and her collar appears fine and is transmitting fine. Located #1967 in an old Cottonwood (?, Salix?) trunk 18m south of where he was collared (~4,6 coordinates). The trunk is broken off ~2m from the ground, is .75m dbh, and is hollow. Later this am Marco once again couldn't locate #1123. This is getting frustrating.