Field Notes U.C. Berkeley January 11, 1989 - cont. Campanile level, I could see something small & whitish dangling in his feet. The tiercel landed momentarily on N-face ledge #6, then sprung back into the air and circled around in front of the campanile (N side). He landed after one circle back onto N-face ledge 6, pocketed prey in his feet, looked around. 13:30 - I went to LSB to get the spotting scope. 13:40. On Evans Hall 10 floor west balcony w/ spotting scope. Observing the tiercel Peregrine on N ledge 6. He has prey in his feet, which is definitely a pigeon. He is plucking the back & remnants of one wing of a brown/white/grey pigeon. 13:50 - Tiercel working over a pigeon wing. 13:58 - Tiercel swallowed one pigeon foot (tarsus) whole. Noticed that the pigeon has grey shoulders. 14:00 - The tiercel was interrupted in eating when the bells of the campanile rang the hour. The tiercel stopping picking at the pigeon, just stood there, looking about for roughly a minute (prior to this he had been eating constantly, pausing only every few bites to look over his shoulder. I should note the peregrine almost invariably sat with his back facing out from the campanile, or at some angle to the shelf so that his tail cleared the shelves of the campanile.