1981 R.L. Mumme Melanerpes formicivorus Low Hay (10 May) reports 6 (!) birds roosted in the hole. One of the two extras was most likely ♀604, but the other? ♀587? ♀602? 11 May Start watch 0445 at roost hole. Birds already have left 0615, moved to watch granary Behavior data on back. 0720, another very excluded chase, involving first ♂307 + ♂461, then later just ♂307, and an intruder that I guessed was ♀604. Very long, persistent chase, over the top of Haystack, on the knoll area, etc. Went on for about 5 minutes Holes checked 1100-1200. Nothing in the Blue Oak hole, where I saw some sort of activity earlier; and in the roost hole there remained the one egg laid by ♀524 yesterday. Ending 1200 Jazet watching hole in granary, where ♀524 laid this morning (see Walter's notes) Walked back up here, relieving Walter at 1205, watching 1980 nest hole with tossable egg. 1743, ♀524 enters; ♂461 looks in, ♀524 leaves 1745 1835 ♀524 enters. ♂523 then enters, ♂461 looks in, at entrance. ♂307 flies to hole, both ♂♂ side by side at entrance. ♂307 gives ♂461 a gentle but definite peck to the side of ♂461's head. ♂461 turned head slightly, ♂307 flies off. 1836, ♂461 enters, leaves 1837, then ♀524 leaves, ♂523 heads out. Does not go back down, leaves