Transcribing the field notes of the Museum of Vertebrate Zoology

Collector: Grinnell-1925 Location: Mineral, 4800 ft. Date: June 18, 1925 Page Number: 2477

9:50 am -- Tolmie Warbler's nest, which Dixon has been photographing, and which Mrs. G & I found 3 days ago, then with four nearly fresh eggs in it. ^^{[But now incubated about 1/4.]} Nest in scraggly, open growth of ceanothus cordulatus, in dry ground, a small yellow pine within 10 feet, but site sunny during the hottest part of the day. Rim 190 mm. above ground surface, nest snugly resting among five dead twigs of the snow birch, with a slanting live stem of same 80 mm. overhead. No single twig directly supporting nest, but compact structure of latter enables it to rest securely among the fine twiggery aforementioned. Female rather shy; sneaks off along ground and keeps quiet and out of sight. Male not noted in vicinity. Nest & eggs taken (1/4). 6259 Sierra Grouse (male) nat. 13.8g. ^^{Iris hazel; toes and unfeathered portions of tarsi, dull yellow; iris hazel.} Taken yesterday (see p. 2475). 6260 Wright Flycatcher (female) 12.2g. With set 1/4 (see p. 2476). Breast glandular. 6261 Gerrhonotus found ^^{on the 16th} squirming along among stems under ceanothus near mom; Dixon has had it for photographing. 5:10 p.m. -- Fox Sparrow's nest with 3 fresh eggs -- complete set because same number on 16th when I first found it. Nest not on ground but up in ceanothus integerrimus ^cordulatus bush, in large tract of same; rim 490 mm. above ground; two slanting green ceanothus stems partly shaded it from above, and a small dead pine stem stood up thru the tangle 10 inches away. Even though the outer portion of the nest is of very loose construction it was well supported by the close tangle of ceanothus twiggery

Collector: Grinnell-1925 Location: Mineral, 4800 ft. Date: June 18 Page Number: 2478

between the nest and the ground. Dixon has tried to get photos of the bird in the nest, but she was too shy for good results, tho frequently came upon sitting. The seeming freshness of the eggs may have meant that they had chilled and failed to start incubation. Nest and set 1/3 taken, but bird not shot. Will see if a second nest be not built shortly, as the site (?) is within 100 yards of camp.

June 19 8:00am - Yellow Warbler's nest, rim 1280 mm. above ground, in nearly upright tree for three-forking stem of ceanothus cordulatus, in sea of same plant on north facing dry slope, with firs and pines nearby -- not a willow in sight! Nest rather conspicuous, near top of tallest spray of ceanothus in vicinity, 450 mm. from upper most leafage directly above. Four eggs, that look far-incubated; not taken. Female going thru brush all about us, tripping anxiously. Male has been seen singing daily all about the vicinity, often from pines and small firs! Just now both (male) and (female) are low in brush within ten feet of me.

9:10am -- Fox Sparrow's nest: two half-fledged young left it as I looked in and still 6 feet away. They were tolled out by the frantic actions and voicings of the two parents, which flopped along the ground under and thru the bushes, giving their "klinks" in rapid succession. Other, sympathetic fox sparrows have also arrived. The rim of the nest is 530 mm. above the ground,

Collector: Grinnell-1925 Location: Mineral, 4800 ft., Date: June 20 Page Number: 2486

6262 Wright Flycatcher (male) ^^{testes [illustration]} 12.5 g 6263 [Wright] [Flycatcher] (female) 12.7 g } mates, with set 2/4. iris ^^dark hazel ^^brown in both.

The female had the abdominal skin thickly glandular, the male not at all - from which I judge that the female does all the sitting; also it was the female which was sitting when I took the eggs. On blowing these eggs appeared perfectly fresh; yet there was an appearance of drying. I suspect that "photography" is disastrous to a good proportion of the subjects - putting an end to incubation by leaving the eggs exposed to the hot sun or by chilling them when the bird is off a long period, "getting accustomed to the camera!"

5:40 p.m. - Mrs. G. has just located a Green-tailed Towhee's nest, containing 3 1/3-grown young, eyes open and alert, but down still predominating. Nest halfway to top of ceanothus cordulatus thicket, in which it is located; rim 520 mm. above ground. Nest supported on slanting stems and appertaining fine twigs of the snow-bush. Mass of nest far less than in fox sparrow; basal loose, coarse layer lacking - more like brown towhee's nest; wall rather thin and compact.

June 21 Heard a Great Horned Owl hooting something during the night.

8:00 a.m. - At Fox Sparrow's nest, found by Mrs. G. several days ago, hardly 75 feet up the slope from our camp-fire place; this is the nest, with two young (now about 1/3 fledged) that Dixon had been photographing. Both parents

Collector: Grinnell-1925 Location: Mineral, 4800 ft. Date: June 21 Page Number: 2488

young had begun to hold its mouth open pouting. [Interrupted by camper!] This Fox Sparrow's nest rests on a slanting stem of snow-bush with the proper lacework of fine twigs attached. Near at hand are two large Amelanchier bushes; and overhead are two yellow pines and a fir. In construction the nest is typical - large, with abundant loose basement of large objects, bark pieces, section of sticks, etc., the inner wall of soft bark strips and grasses course in texture, not fine as in towhees.

June 22 7:34 a.m. - With ^^Egmont Rett and ^^Ralph Hoffmann up ridge east of Martin Cr. Fox Sparrow's nest, with 3 young that left nest for good when disturbed, in rather low snow flattened thicket of ceanothus cordulatus, on open forest floor, cedar and yellow pines overhead. Rim 140 ft mm. above ground; nest last less bulky than usual, resting on tangle of ceanothus stems and twigs mixed with yellow pine needles, so that there is really no open space between nest and ground. Nest lining of fine round grasses mostly - no bark strips this time. Young are being lolled (?) off in different direction by both old birds, acting separately. Young have hoarse "chirrup" note, uttered rapidly when they are trotting thru the bushes.

8:15 a.m. - Cassin Vireo's nest: rim 1910 mm. above ground in forking twigs near drooping end of branch of incense cedar over open forest floor on dry ridge top. Male was singing overhead, leading me to the site; [female symbol]

Collector: Grinnell - 1925 Location: Mineral Date: June 23 Page Number: 2493

Mt. Chickadee (2); Western Tanager (5); Fox Sparrow (2); Chipping Sparrow (18); Hermit Warbler (3); Tolmie Warbler (1); Calaveras Warbler (1); Warbling Vireo (8); Calif. Purple Finch (4); Wood Pewee (13); Lazuli Bunting (3) Pileated Warbler (1); Spotted Sandpiper (2, along sparsely pebbled margins of creek); Traill Flycatcher (1); Yellow Warbler (2); Robin (29+, one seen carrying mud up to nest 50 feet above and on lowermost branch of huge yellow pine); Cassin Vireo (1); Audubon Warbler (7); Blue-fronted Jay (1); Turkey Vulture (2, one circling above vicinity of store (?), and one above woods at this end of the meadow) Brewer Blackbird (1, [female symbol] bathing and preening, as if just off nest); Pine Siskin (1); Ruby-crowned Kinglet (2); Canada Nuthatch (1); Crossbill (1, loud "chup" note heard from tips of yellow pine, given persistently, until bird flew, and also then); Killdeer (2); Meadowlark (2); Sierra Creeper (1); Western Bluebird (2); Western Lark Sparrow (1, [male symbol] singing volubly from well up in yellow pine at edge of meadow); Wright Flycatcher (2); Olive-sided Flycatcher (1); Solitaire (1); Pygmy Nuthatch (2, in different places, in upper parts of large yellow pines); White-headed Woodpecker (2); Modoc Hairy Woodpecker (2); Red-winged Blackbird (1+, heard from willows along stream, far out in meadows); Cassin Purple Finch (2, mating pair).

Total, for 1 1/2 hrs., 8:15-9:45: 38 species, 133 individuals.

1 p.m. Still at west end of Battle Creek Meadows. Have heard a Black-headed Grosbeak singing, and a Red-shafted Flicker. Just saw a Black-tailed Jack Rabbit (Lepus c. californicus) lope up the hill thru the snow bushes, from