1981 R.L. Munne Melanerpes formicivorus Road 3 (17 April) to the 2° granary as a tight pack early, But nothing much happened. ♂184 & ♂68 mounted each other several times (especially after the 9265 went into roost hole), with no sign of aggression at all. One ♂ attempted to mount the ♀, but there was a scuffle / jumble, and no copulation took place. 18 April Nest check 1730. 3 eggs, the one laid today marked #3 and returned 21 April Nest check 1015 - 4 eggs bird in the hole as F arrived, clutch complete. Egg measurements ① 25.8 x 19.8 2 first-2 ② 25.5 x 20.0 ③ 24.7 x 20.1 3rd (laid 18 April) ④ 25.2 x 19.7 4th (laid 19 or 20 April) 23 April Nest checked: 4 eggs, plus F introduced a plaster egg ( measurements, weight at right) at 1530. 6.10 g 25 April Checked nest here 1200. Plaster egg (not surprisingly) is still here! Good. Removed it, introduced one dice (die) into the nest. Still 4 good eggs. N=1 27 April Nest checked 1100. Still 4 eggs, plus one warm die (♀ was in when I arrived). Good! They did not throw out the die. N=1 1 May Byron reports Rd3 young have hatched by this morning! 23 May Baded 3 very heavy young w/ Walter 31 May Here at 1710, thinking that I was going to be watching for dominance interactions among the juveniles. It looks like