June 11th. Hummer working. 9 A.M. The humming-bird is at work now, "licking" the out- side of the nest and jiggling up and down in it. Rhody "discovers" At 7:30 Rhody was not visible anywhere, but at 8:30 he erupted from the magpie and ran swiftly toward me, following at my heels to the tool-house. There he cried and cried until he was given a mouse. Full ritual followed, without however, presentation at the mirror. His expectations appeared to be based on prospects to the north, so he went over the fence and took up a point of vantage where by turning his head from side to side, his vision encompassed a wide area spread out below. This brought no results, so in 25 minutes he was back in his house in the peppermint gum, after prospecting the intermediate territory, where he eventually ate the mouse himself after soft cooings--but not song. During his prospecting tour he was scolded by the ubiquitous house wren, wren-tits, one junco and some linnets a considerable distance away. Thrashers showing reversal in form. Incubation continues without interruption at the thrasher nest and the experience--new here, which began with this third nest, of being totalled ignored by the incubating birds--also continues. This is a distinct reversal of form by these birds. Since the first egg was laid in this nest I recall seeing neither bird away from it more than once or twice and then neither could be enticed to approach me. During my frequent absences recently (which may have something to do with their changed attitude) Julio has had similar experience. Grosbeaks here with their brood. The Blackheaded Grosbeak has not been known to nest at this place, although it may have. However, it is here often in season, coming and going and usually appears with young ones about this time. This is the case at present. I went down to a cherry tree in the orchard to watch them feed their young. Rhody soon joined me, ostensibly to sun his back, but when I started for the tool-house, he led the way. Display followed! (1:30 P.M.). While we were by the tree other birds came to watch Rhody: Bushtits, two Allen hummers (the female not the one with the nest) linnets, pur- ple finches, Nuttall sparrows and brown towhees. Late grosbeak nest near Life Sciences Building, Berkeley. I have been watching a grosbeak nest at the University, which was started about a week ago. Incubation is appar- iently now in progress, as the nest is always occupied when I go there. This morning it was seen that the male was in the nest and that he called, using a phrase from his song, when he want- ed relief, just as the thrashers do. Hummer "decorating" 2:30 P.M. The Allen hummer is putting "moss" (an alga?) on the outside of the nest. I watched her at 5 feet distance with 5x glasses. She still gets some material from the bushtit nest. She sat quietly in the nest for about five minutes and began to doze, her upper eyelids gradually creeping down to meet the lower. While doing the male appeared, buzzed about for a few seconds, inspected me, departed. Upper lids close. The female seems to slacken work around five o'clock, visiting it rarely after that. She does not stay in it at night.