Field Notes Doug Bell S.F.-O. Bay Bridge, SF Co., Calif. U.C. Berkeley, Alameda Co., Calif. February 1, 1989 - unit. (in this case, due east) and 2 are at the sides. This arrangement is visible on either side of all towers on the suspension-portion of the Bay Bridge, including the central cement anchorage, where the falcons seem to be located again this year. There were no eggs yet in the box. So they spread a nice layer of gravel throughout. I was surprised at all the beams underneath the bridge. There seemed to be lots of places for the falcons, and more importantly, offspring to sit (if only they can survive that initial jump 'trot going into the clunk'). As we were leaving the nest box both falcons flew up and landed on beams not too far away - just staring at us. Beautiful adult falcons. The male appears to have a thicker, darker cap, Both birds clean, quite white-ish on breast. thick malar stripe. Their dark, penetrating eyes observed us. We left them. The whole operation took less than an hour. By 11:50 we were back in Berkeley, standing at the Campanile. I was just about to go to a seminar when the peregrine flew in from the east and landed on the NE corner of ledge #2. We immediately went up to the 10th floor balcony of Evans Hall - set the scope on 'her.' Got a good look. Alliterated Matt of his thoughts that she might be a sub-adult. Lee thought her tail tips looked fairly worn. I was continually struck by her very uniform chocolate lack box illustrated in a tower (not the cement pillar, but the boxes are all the same whether on tower or pillar)