1977 Walter D. Koenig 8 Melanerpes formicivorus Bianca Hastings Reservation (30 September) 1545. In tall Valley Oak on top of the field toward Al is j (possibly →♀) ©y Red/or-#413. 22 October 1700. Chasing of 2 ub birds (1♂, 1♀ apparently) up at the upper end here; one bird doing some of the chasing is (①♂DB/la#411. 1713. ©♂wh#140 in main area with lots of others. (③♂or/wh#214. 1725. (①♂)♂wh-DB/wh#412. Also one bird seen flying overhead with an acorn in its bill heading straight down towards Jimmy's corral! This is perchance partly where the intruders are coming from. 1735. ♂214 displaced an intruder from the Old storage tree. 1740. 2 birds flying high up the canyon from Jimmy's and landing in the old tree together were immediately displaced by ♂214. 1745. (⑤♂)♂laL#217. 1800. Leaving. Still some chasing going on and birds around, but it's too dark to see much anymore. 23 October 1030. Watching. ♂140 flushed from main area. 1050. Light is bad down here. Moving to upper area. 1055. (②♂)♀LB/Red-c #303 here in large Valley Oak at upper edge. 1100. A good chase going on up here at the moment. 1103. (③♂) Red-/M probably #413. There are birds all over the open field area up here, coming no doubt from most of the surrounding groups and even beyond. 1110. (②♂) ub, apparently the resident. (③♂)♂P/M#217. An intruder flying in from the field was chased out even before he landed! 1120. Even this is not quite getting me what I want, whereas all the isolated trees up here in the field are loaded with birds. Leaving. - (Bianca birds are flying at least as far as the "Top" Valley Oak here (in Al) for acorns.