1977 Walter D. Koenig Melanerpes formicivorus Hastings Reservation, Monterey Co. Calif. (7 April) 1220. Wasn't able to get to the net before I got a 3rd ♀ (#358) 1400. This still going strong. Took some pictures, then replaced the net with a 30'er. 1500. 4th bird (♀ub) caught, #359. 1520. 5th bird (♀ub) caught, #360. The probability of catching 5 straight ♀♀, given an even sex ratio (and in the population as a whole it's biased towards ♂♂, of course), is already (.5)^5 = .03125 (1-tailed). 1600. Taking net down and going home. There is lots of activity and chasing still, but it has mostly shifted to several peripheral foci about 50-100 meters away from the granary. Birds still do come to the granary, but there is less chasing there than elsewhere, and I suspect that they are mostly the "residents," while the thrust of the intruders have been pushed outside this core area. There are still probably ~20 birds still involved here altogether. They have also begun to get rather more wary in the granary, and as a combined result they seem to be successfully avoiding my net. 1630. Leaving. There are, by the way, a couple thousand acorns remaining in the granary here. 24 April 1900. Went up Robertson Creek looking for ♂323, but was unable to find any trace of any birds there. Up the slope of Poison Oak Hill a ways were some AW calling, but there was no way of telling who they were. 27 April Walked up Poison Oak Hill. From 1115-1200 or so I sat at the site of the Thanksgiving Revolution, during which time one ub ♂ came by, followed 20 minutes later by 3-4 birds getting