1931 R.C. rumme melanerpes formicivorus 1800 (7 May) to peck hard at the head of ♂561. Then ♂476 hitched up the branch, and I'm fairly sure (not positive) that he gave ♂347 a quick peck to the head. I definitely saw ♂347's head turned away in the usual subordinate manner. On toward roosting, I saw a pair of good ♂-♂ copulations. On one, ♂347 lightly mounted ♂476, then ♂476 gave him a good, 4-5 sec tail twist "copulation". Saw the same sort of thing a bit later, but I couldn't see who initiated. At roosting, the "packing" by the core 3 was extreme. Very tight, but I couldn't see any evidence of mounting of the ♀, dominance, etc. 9 May a peep-in hole check at 1145. 4 eggs, so ♀193 laid both yesterday and today. A ♀ (presumed ♀193) was in the hole when I arrived. 10 May Hole check 1700. 4 eggs, so clutch complete as of 9 May. Expected Hatching: 20-21 May. Hole Opened, eggs measured. ① [illegible] 24.1 x 19.5 ② 23.4 x 18.7 (failed to hatch) ③ Fucked up 24.3 x 19.5. Air cell in middle of egg, weird calcium chip on surface of egg over the air cell ④ 24.0 x 19.0 (Freshest looking, probably last laid) → Roosting, pretty sure it was ♂476 alone. A 2nd bird ♀ looked in 'till quite late, but then flew off 18 May Roosting again. Pretty sure it was ♂476 alone. I think I saw Black, or definitely no metal on the left leg.