Field Notes D.A. Bell May 18, 1990 pothole is at the top of the middle series of major rock faces in pine canyon. The pothole is large, just below crest of rock top, sort of recessed below an overhang. Pothole ca. 5' x 6' in rectangular form. Cliff Swallows nest in top of pothole. I think this is a traditional site, which the museum has photos of. Update on Bay Bridge - On Monday, May 14th, I saw an adult Peregrine F[illegible] & turn down underneath Bay Bridge just where the cantilevered section makes a bend, on Oakland side, ca. 3/4 km from Yrba Buena I. I was headed east, on lower deck. Toth The falcon was seen on the S. side of bridge. In talking later to Dr. David Gregoire, he found it all interesting. Well, today, May 18, he talked to bridge people who saw a pair defending the first tower E of Yrba Buena. David went out then at 14:30, watched from Yrba Buena. Saw one food [illegible] transfer -> where ad. brought food to "cave-like" hole, on N face of tower, about 8-10' up from a platform and 15' below roadway. The hole is in the leg of tower. Ladder goes right past it. David saw a falcon in hole -> ad. & today fed [illegible] food from ? ?, feeding chicks, not likely. David thinks this is the mysterious Evergille pair!