1977. Walter D. Koenig Melanerpes formicivorus Plaque Hastings Reservation 15 April 930. The 3 residents all sitting atop Plaque together; no undue amount of activity here. 18 April Some chasing was going on up here in the morning. 19 April 1800. $RRRW#157$ in 20 tree. $[illegible]$. 1820. $\sigma$ or m #361 in 20 tree; $\pi$157 in Plaque. 20 April Watched at dusk. First 4 birds appeared in the top of Plaque: $\pi$157, $\sigma$22, and 2 intruders who were summarily displaced. Several minutes before dusk really set in, these 2 birds did some mounting - a brief $\sigma$ followed by a more extensive (4-6 seconds) of $\sigma$22 mounting the $\pi$. $\sigma$22 Then flew to the trees by the upper barn, near where I could see the 3rd bird. Just before dusk all 3 birds reappeared atop Plaque - $\sigma$361 tried to mount the $\pi$ but the $\pi$ walked out from under him; $\sigma$22 did not mount her again this time. They roosted right after this in the Blue Oak by the labs (all 3, I think). 21 April 1400. All 3 birds here; Monica watching. 22 April We all watched roosting this evening. Pam saw 2 birds only roost in the hole by the lab, but thought there might have been a third in the vicinity. Obviously some careful searching will have to be done for other holes in the area. See Monica's notes for daily reports on this group from now on through until we find a nest. 23 April Pam watched the hole by the office (which I'd opened this afternoon) but nobody came to roost. No doubt the class here this evening may have been something of a deterrent.