(46) (While I was crouching nearby watching the change of shift, an Allen Hummingbird was gathering down, about 2 feet from my head, from a baccharis bush). Mar. 14th. 8:20 A.M. I have just witnessed the first departure from this programme. Brown-eyes was on the oval lawn a few minutes, very tame and confiding. I gave her worms and soft food and when she had had eough, she started in leisurely fashion towards the nest, I going with her. When we got there she did not go up, but went into the glade and out the easy side. I looked into the nest and saw Green-eyes sitting there comfortably, talked to him, then stood in the road near- by. Brown-eyes was coming towards me, when the rich opening notes of thrasher full-song were heard from the nest. We ran toward it at once, but Green-eyes had hopped out and left about ten seconds before Brown-eyes arrived and settled down in it. There were three eggs. This is the first time that one bird has been seen to leave the nest until the mate has been there, sitting on it, ready to take over, and the first time that the bird in the nest has been heard to notify the other that it was going to quit whether the other showed up or not. Just on hour afterward I went out and Brown-eyes came running and flying to me. This looked like a short shift, as according to precedent, she should have still been on the nest. Thinking, that perhaps neither was on it, I looked, but Green-eyes was there. Brown-eyes came too and they changed shift, Green-eyes coming to me to eat worms. (The place swarms with Steller Jays this morning). 11:50. Green-eyes on the nest. No records for the rest of the day, although the nest was looked at occasionally. Rain began about 4:15 P.M. March 15th. Went to the nest at 7:50 A.M. Brown-eyes sitting in it looking good and dry, although it had been raining during the night and every- things about was wet. While I was talking to her, she began chirp-