1980 Walter D. Koenig Melanerpes formicivorus Plague (6 April) subjected to. This latter part is particularly amazing - She was apparently here from 1530 [illegible] to about 1800 - 2.5 hours - by herself, subjected to almost constant harassment, before any other intruders joined her. By 1800 I had the net up and watched as several additional intruders appeared and activity continued to escalate. Over by the creek near the Griffin's I identified 3 banded intruders, 2 of whom were ♀9523 and 524 from School Hill [not seen there recently and apparently wandering; both are 1st yr] and the 3rd of whom was something like ♀MyRed ?? It was about this time, with ≥4 ♀ intruders here, that we realized we had not seen ♀482 and that she was no doubt gone. How these birds knew it, even while being vigorously chased - is a mystery to me. Even though Ron's pretty sure that the 1st yr ♀ here (♀522) was not the 1st chaser, she was definitely doing a lot and got herself caught in the net during a chase at about 1830. At that point we gave up for the night, even though activity was still continuing. 7 April I arrived here at 800, at which time there was lots of fighting going on, all up by the Hastings Cabin. I received the following report from Ron and Greg: Ron arrived at 645 and fighting had been intense already at that time. Chases, grappling, and the