1985 Walter D Koenig 4 Melanerpes formicivorus 1802 (17 April) again: marked 2 by Philip. (3) 9785 laid a small-not obviously runt egg-later on, marked #3. (4) 9193 tossed egg #3! Philip left at 1000; when I came at 1020 both the larger eggs from yesterday and today were still present; and I finally measured them. 9787 has not been to the hole today. This is all bizarre but the story appears to be clearing, based on a combination of hard and soft information: to wit: ("Soft" info) { 9193 lays very early (>630 am) 9785 lays later; 9787 doesn't seem to be doing anything. Hence: 15 April: 9193 lays runt egg early, tosses it herself (observed) 16 April: 9193 lays normal egg early, 9785 lays small (but perhaps only marginally a runt at best) eggs later. 9193 tosses 9785's egg. [None of these events observed directly other than that 9193 & 9785 laid,] 17 April: Same as 16 April, only it was all seen this time. 9193 laid normal egg early, 9785 a small egg later, 9193 tossed 9785's egg. Interesting group! All this suggests some degree of egg recognition on 9193's part! Which could be a first! 1128. 9785 entered hole. 9193 and 9771 came to hole, watching with great interest. Eventually (~1132) 9785 left, no tossing. 1135. 9770 entered hole, followed by 9193. Both in for ~5 min. ♀ left, then 9770, no tossing. Looks like no more tossing today by 9193 or 9785; if an egg disappears by tomorrow it's 9787's doing!