1991 Walter Pfenig Melanerpes formicivorus Middle PHF HNHR 27 January *Group update* 1840. NSAB. 5 April 2045. Captured 4 birds (♀1531, ♂1613, ♂779, ♂1780) in the higher hole (newly opened) in the Valley Oak Tonight. I painted them up with The hope of aiding identification for mate-guarding. 7 April 80%. Watching. Trying for a mate-guarding watch. 820. Over in The side: ♂Da/Rei-Da chased off by ♀ or/or-w/n #1863 (LPHF). Not sure who this was. I probably mixed up the bands or leg. 1030. Giving up. Not great, but I did actually get some data (see back). No sign of guarding as yet. I did see the 2 breeding ♀♀, ♂1613, and ♂1780. I also did not see ♂779. But there is certainly at (least one) unmarked ♂, presumably ♂1614, here as well. 11 April 755-100. Did another "non"-mate-guarding watch with reasonable success. Again I eventually identified everyone (including ♂1614) except for ♂779. See back for compilation. 17 April 800-930. Mate-guarding watch; still no sign! But I did finally see ♂779. See back for transcription. 22 April 1015-1200. Mate-guarding watch: 1015. ♂1533 b.h. 1025. ♂1533 b.h. 1035. ♂1531 w/ ♂1613, ♂1614 ♂1614 flew off, ♂DNF ♂1613 flew off, ♂DNF 1040. ♂1533 b.h. (at hole) 1100. ♂1533 w/ ♂1613, ♂1614, ♂1780 ♂1614 flew off, ♂DNF ♂1780 flew off, ♂DNF ♂1533 flew off, ♂1613 followed 1130. ♂1531 w/ ♂1533 1135. " " 1140. ♂1533 b.h. 1145. ♂1533 b.h. Saw birds on the styrofoam granary; also, several birds hung out on $ in a hole which I'll have to open later today.