1980 Walter D. Koenig Malamerpes formicivorus Plague (9 April) the ♂♀ (any of them) and then chase or displace them; also, the 2 pairs of ♂♀ are fairly evenly matched; however, I think the Sch. Hill birds have a slight edge. The Blomone birds do seem to have. the Plague tree, however, which may be to their advantage (the Sch. Hill birds are in the 2º tree; the 38 are in (both)). Most of the serious fighting is also in the 2º tree, apparently between the 2 sets of ♂♀. This evening Ron reported that ♂494 and ♂496 appeared to have won - not only did he see the 38 mounting them (inc. a copulation between ♂473 and [illegible] one of the ♂♀) but he also saw the School Hill ♂♀ actually fly off toward School Hill near the end. This is all rather exciting! even if those 2 ♂♀ from Blomone were supposed to stay and breed back home! 10 April Ron watched here today, reporting that ♂496 and ♂494 are now well ensconced; he also saw several more copulations between ♂473 and ♂496. ♂522 appears to have disappeared entirely, and was not even up by the cabin anymore. See Ron's notes for more details. 12 April 900. ♂473 over with ♂496 over by the Woodpile; ♂3521 with ♂494 atop Plague. 915. A chase - ♂3521 chasing ♂496 (!) 923. Several birds converged at the top of Plague; ♂496 mounted ♂473, then he mounted her, then she mounted him.