1977 Walter D. Koenig Melanerpes formicivorus Plague Hastings Reservation 25 April All 3 birds here at dusk, apparently roosting in the trees by the labs. 29 April Watched here for several hours in the morning, partially with Monica. Every bird's here, with the ♀ and ♂22 still rather prominent (often sitting together atop Plague, etc.) while ♂30W sort of lurks in the shadows and is only seen occasionally, and then often by himself. The most interesting event this morning was when the ♀ began Garrick ing rather gratuitously, and shortly thereafter flew to the ¼-finished hole in the far telephone pole (by Bell's), sat near the hole occasionally looking inside and Garrick ing regularly for several minutes (meanwhile ♂22 was atop Plague and he seemed to pay no attention at all to the ♀). Eventually, after 5-8 minutes of this she flew back into Plague. Birds were also seen flying to the bridge area, when they were eating catkins from the hybrid lobe ta x there. 1950. Back for roosting. Again ♂22 and the ♀ were together atop Plague, after which the ♂ mounted the female for several seconds (longer than a normal pre-roost mounting); almost immediately the 3rd bird (the 2nd ♂) flew up to the same area, at which instant the other 2 birds dismounted and all 3 birds went to different corners of the top (the 2nd ♂ did not get a chance to mount anybody). Soon afterwards all birds flew down to the trees near the footbridge, where there has to be another roost hole. 3 May 800. Watching. 815. Several Garricks by the ♂Or turned out to be the presence of a ♀ub intruder.