UNUSUAL BEHAVIOR. in a pine tree on the north line, one following the other doggedly from branch to branch. The pursuer was almost silent, but the pursued broke into loud song phrases at intervals. If this was one of my b birds chasing a stranger away, the singing seemed to come from the wrong bird. They then dived into the thicket below the wall at the west end of the place, and all was quiet. I went down there and both birds, looking very long and wild, flew up toward the house. I found B is pursued them, by sound, near the Sparrow-hawk pine, one still chasing the c other. The latter ran rapidly to me in the open about 75 feet. Much to my astonishment, Brownie was the pursued. As he reached me, Greenie chased him away through the bushes and berry patch, but he circled back toward me around a lath house and I lost sight of him for a moment. I took one step and he popped out from under me, Greenie still after him. Once again near this same place, he seemed to come to me for safety, only to dart away again with Greenie after him, not, however, until he had sung loudly about 8 feet from me. All of this seemed to me exactly the reverse of what it should be-- the female pursuing the male. This continued for more than 2 hours, with intervals during which one or the other perched on a high point and sang loudly. Both birds were positively identified thus in full song, and once, when they were momentarily separated about 100 feet, both sang simultaneously. They went from end to end of the place and from side to side and entirely out of the property several times, also climbed up and down trees. Whenever near enough for me to tell them apt, G was always the pursuer. Strangely enough, I succeed ed four times in getting one of them to take a worm from me. Each time it was the "timid" Greenie. B would look at me with a wild look in his eyes and seem to want to come, but would always run away as his mate approached. They were both much excited, especially G only one to come to me. Brownie. G, as noted, was cool enough to get a worm now and then. Just before I left, the evolutions centered about the glade, where