June 12th. Thrashers continued incubating faithfully and silently, not even calling for relief. Neither was seen off of the nest. Rhody continued his home-staying and "incubation". The one mouse given him was treated with honors. Allen hummer. The Allen hummer worked in casual fashion, mostly applying material to the outside of the nest and compacting the structure, which is now more nearly circular in plan, but looks "too small" for the bird, as most of her is visible when she sits in it. The parapet does not appear to have been raised during the day. June 13th. Allen hummer has one egg. 9 A.M. At about 8:15 A.M. it was seen that the humming-bird has one egg in the nest, but she continues to work on the outside, probe the parapet and "jiggle". No egg there at 6 P.M., 12th She also sits quietly on the egg for several minutes at a time, but does not hesitate to leave it exposed for long periods. Hummer drives towhee away. 9:20 A.M. She has just attacked a brown towhee--not act- ually striking him--but buzzed about him threateningly until he left the tree. Thrasher chick due to- day. This is the sixteenth day of incubation for the thrashers in their nest No.3--38, so there should be an egg hatched if all is well. Neo back on old footing-- nearly. 11:30. About 15 minutes ago Neo was heard making the "blue- bird" call softly toward the sage patch. I went there and he came for worms, for the first time in weeks. He ate them himself, leaving when Rhody thrust himself into the picture. I bribed him by lead- ing the way to the tool-house and "doing the necessary." Neo was back in the nest when I returned. His first use of the call in weeks; his coming for worms for a like period; his eating them himself; the 16 days--all coordinate with past experience to indicate the hatching of the first egg this morning. (Note that he took no worms to the nest, indicating that if there is a chick there, it is too young to be fed meal-worms). At 1 P.M. Neo accepted a worm, prepared it with great care, carried it back and forth along the fence for a minute or so, as if uncertain what to do with it, then took it to the nest. It was not determined whether he gave it to the chick or to his mate. Rhody showed no departures from form during the day. Hummer still works on nest. The humming-bird's attitude toward the nest during the rest of the daylight hours seemed little changed by the presence of the egg; new material was added and there were frequent long absences. Between 5 and 7 P.M. the nest was observed fairly often, but the bird was seen to visit it only once. At the time it was thought that this meant she would not cover the egg during the night; but an ob- ervation made at 11 P.M. revealed her presence in the nest. June 14th. (Sunrise 4:46, sunset 7:35). At 5:25 A.M. the humming bird was sitting in the nest. At 6 she was away and it was seen that there was still but one egg. Between that time and 8 A.M. she was seen to add more material from the bushtit nest, and absented herself often for peri- ods of several minutes. Only one egg.