1976 Walter D Koenig Melanerpes formicivorus Pump Hastings Reservation 2 February Drilled the first 100 holes in the willow tree, using the ½" (42) and 7/16" (58) drill bits. I did not put in any acorns. About 1½ hours later, at 1350, I came by to take a couple pictures. Lo and behold, there was an Acorn Woodpecker in the willows just besides the incipient storage tree. I wonder what took him so long? I could not get a very good look, and he apparently left shortly afterwards. (He had probably come to drink). 1700. Drilled another 100 holes (50 ½", 50 7/16"). Total now of 200. While walking by again at 1715, a bird was calling again in the willow trees downstream from the storage tree: I went over and discovered 2 birds there, both 8" and neither banded, I don't think. While watching 2 more birds flew in from Bloquist somewhere, also landing in this area. Meanwhile one flew over to the willow thicket by the Storage tank. Shortly after this I left, but returned about 15 minutes later, when all 4 were still in the × area. Very soon after my return 1 flew over to the Valley Oak on Bloquist's by the pond (— on map). The other 3 flew over to a tree on top of the 1500 knoll; two went together at first and the other followed shortly: I could not follow the eventual disappearance of the 4th bird over the pond. 3 February Drilled another 200 holes, 60½" and 140-7/16". TOTAL 400.