Field Notes Doug Bell U.C. Berkeley February 1, 1989 - cont. We had the scope on her not more than 5 minutes when she began “e-chuck” ing. We couldn’t believe it. Scanning the skies we were all excited. The falcon took off & headed off the SE. At about the level of the hills, behind the I-House, a smaller falcon came stooping down out of the clouds. Matt thought he saw a “silver” appearance to it - which may suggest it’s an adult. Next to our Berkeley falcon, it appeared much smaller. All in all, I really think this Berkeley falcon is a ♀ based on 1) size to the other bird - also having just seen the pair on the bridge 2) voice - deep, throaty 3) behavior - “echucking” to the male. The two peregrines continued to circle about one another and make shallow stoops, usually the male would get down her then do a long shallow but fast dive on her, a couple times it looked like she rolled to greet him with her feet. They got really low at someone’s house in the hills behind I-house, then began climbing & wheeling in the clouds in the direction of Claremont, then Piedmont. We lost sight of them after about 4 minutes, they had drifted way south, lost in the clouds at about the level of Oakland. Just fantastic. We were quite jiggled. Is this the start of something. Did the travel entire her to Oakland? Is this the tunnel of a pair that supposedly hung around the