1984 R.L. Mumme Acorn Woodpecker Black Oak 4 April 0800, up here with Denise + Philip, a mini-power struggle going on at Black Oak. The situation is ① 4 un-banded birds (at least 2, probably 3 ♀♀, and 1 ♂) have control of the main granary area, and the perch trees to the west ② The Castro 2° granary is occupied by at least two ♂ UA2 ♀♀ 778 + 779, plus the possibility of ♂ 8915. They don't look all that dedicated, though. Also seen being chased from the 1° area was 9568 of Al, Denise may have seen ♂ 736 from Sobo, t I may have seen ♂ 777 from Lambert. NO acorns here, maximum of 9 birds were present and not much action. 15 April Turn-oil at Black Oak. 0700, a power struggle is progress ① 2 old Black Oak ♂♂ ♂ 689 or /unt and ♂ 426 Blk/or-wnt, and 3 UA2 ♀♀ (♂ 778, 779, and ♂ 780 are waking together in the 1° granary area. They seem to have firm control of the main storage ② Waking together in the 2° area are ♂ 736 of Sobo, plus 3 ♀ NB. They have loose control of the 2° area and the 1983 Poison Oak nest hole. At least 3 other independent NBs (18', 29?) are around, making a total of 12 (at least) birds here. I also saw what has to be old-timer ♂ 102 Yellow/NB, a very heavily mustaciated ♂. He and E think ♂ 321 + ♂ 691 were all in the 2° area briefly. Off, co-fine ♂ 102 yellow - in the 1° granary area with ♂ 426, ♂ 689, ♀♀ 778 779 780. He's not that adult I may have confused ♂ 736 for ♂ 321/691