Transcribing the field notes of the Museum of Vertebrate Zoology

Collector: Grinnell - 1925 Location: Mineral Date: June 28 Page Number: 2507

him, are quantities of castillejas, to which some peripatetic [female symbol] resorts every now and then. As she appears, the male launches skyward, to indulge in from 2 to 5 sky-dives down nearly to the ground past her. At the lowest portion of this precipitate parabola, he gives a curious "bzt" sound, like a bee held down, ^^{just once}. How the sound is made, whether by wings or syrinx I do not know. Another [male symbol] Calliope Hummer has his main stand on the tipmost splinter of the stub in which the Mountain Chickadee's brood was raised. Another has his stand divided between the growing tips of 3 closely adjacent young yellow pines slightly overtopping a sea of snow-brush. Another perches chiefly on one of the highest twigs of a service-berry thicket in an opening among firs. In the case of the Calliope Hummingbird, where "the house is divided," census designation is not as clearly determined as in other birds; but I suppose that the ^^{location of the} nest, alone, should be counted.

4:15 p.m. - Intent. The Mountain Quail's eggs weighed, in grams, as follows: 11.6, 12.2, 12.3, 13.2, 12.2, 12.0, 12.5, 12.1, 11.4; average of the nine, 12.2 g. In only two could I detect the slightest trace of incubation, that is, of blood (which is really rather advanced, embryonically speaking!).

6270 Cassin Vireo [female symbol] ad. 15.5 g. Shot yesterday, with set 2/4 (see p. 2500).

Two Red-Tailed Hawks circled near camp today,

Collector: Grinnell - 1925 Location: Turner Mt., 6300 ft. Date: July 3 Page Number: 2517

consist of: Ceanothus velutinus, C. cordulatus, chinquapin, service-berry, red cherry, Sierra maple, Arctostaphylos nevadensis, A. patula, red alder, and various herbs.

Written later, from pencil notes. - Birds noted right around the top, within 100 yards of the lookout house, were: Fox Sparrow (one sang repeatedly from the dead tip of a fir, lightning-blasted); Green-tailed Towhee (one sang from the lower stubby limbs of the same fir, interests centering in the brush close to the house); Cassin Purple Finch (at least three in full song up near tops of live small red firs, one came to cleared ground within 20 feet of house); Blue-fronted Jay (heard down in the hemlocks and firs below rim of cirque); Junco (a dozen or more, flying, singing or foraging along the rim and especially around the melting snow banks); Violet-green Swallow (fully a dozen in flight under the cloudy sky within the cirque, often swooping low over the snowbanks, much twittering and, I think, young among them.

Mammals around the lookout were: Callospermophilus (two, very tame, Mr. Stark complaining that they got inside his room whenever they could, only to tear about distractedly as soon a they found themselves enclosed), Chipmunks, Eut. amoenus (3 or 4 among the rocks and in the chaparral about the house); deer (tracks and tails abundant everywhere, one 4-point buck seen below the cirque on the moraines going thru [sic] the heavy

Collector: Grinnell - 1925 Location: Mineral, 4800 ft. Date: July 25 Page Number: 2529

otherwise only occasional food calls or fainter "location notes" are heard. I heard a Green-backed Goldfinch passing overheard, and a Western House Wren in the snow-brush; so the up-mountain movement of lowland birds is under way.

July 26 Last evening a Hermit thrush sang fully but only for a few minutes, from its usual post in the firs down near the edge of the first willow bog. This morning at daylight a Tanager sang in nearly full early summer measure; but that was the only singer. A little later, I heard the "bell" notes of a Solitaire up near the spring. Still later, a spotted-breasted but full-grown young Solitaire was eating Amelanchier berries within 50 feet of our camp, the bird giving ^^{now and then} an intoned, buzzy version of the bell note. The Amelanchier berries are turning reddish now, but not yet at all ripe. Even so, they are already sought after eagerly by Fox Sparrows, ^^{Calif. Purple Finches,} Green-tailed Towhees, etc; also chipmunks (Eutamias amoenus). One of the latter close to camp climbed a slender swaying stem to within 18 inches of the tip, took a berry, biting it off, then balanced himself on his hind feet, and then operated the berry with his teeth and paws in usual fashion; presently he went the stem, quietly, head first, body fully extended.

Later - A Sparrow Hawk flew over the tree-tops near camp, calling shrilly. Mrs. G. took me to see several