1979 Ronald L. Mumme Melanerpes formicivorus Arnold 3 Hastings Reservation (22 June) no bands ♂ doing a lot of high intensity open-wing wakes (especially to ♀ 207) drumming in the granary, etc. After a while of this, there appeared to be a reversal. The no bands ♂ started to chase ♂123. Then one of the birds entered a hollowed out area in the granary tree. Another bird app came to the hole, and with the two birds face to face, they locked bills, and fell to the ground out of my field of view. After 5-10 seconds, the two birds flew off down into the canyon. I had no idea who the participants were, but after this big grapple, I never saw ♂123 again. By 1400 hrs the no bands ♂ and ♀207 were looking pretty cozy, waking to each other, flying around together. The "NB" ♂ was especially interested in the granary, poking in all the cracks & crevices, and I saw him extract some food (presumed acorn bits) and eat them. Interesting that ♂120, who I saw here most definitely two days ago, was not around. I think he must have been knocked off. ♂123 had been hanging around Bianca with ♂126. Perhaps he had been living in both places, and maybe he'll move back there now. I was fairly sure that I saw ♂126 at Bianca earlier in the day (see Bianca notes). For awhile during this revolution I though I saw 4 birds (and an unbanded ♀) but I wasn't sure. Toward the end I saw NBO♂ + ♀207 chase an unknown intruder