Transcribing the field notes of the Museum of Vertebrate Zoology

Collector: Grinnell - 1925 Location: To Lassen (Inskip Hill) Date: June 12, 1925 Page Number: 2459

Came on up the "Lassen highway" last evening and camped for the night on the flat at the southeast base of Inskip Hill within a mile of Payne Creek P.O. - altitude close to 1800 ft. Here is an almost pure stand of smallish yellow pines and black oaks, some of the latter large. This tract of woods constitutes an "island" of transition at 1700 to 2100 ft. alt., entirely surrounded by Upper Sonoran in which blue oak and digger pine in usual scattering habit are the most conspicuous indicators. We camped in the middle of the yellow pine and black oak woods but the tract is so restricted that we could hear out in all directions, and furthermore the birds of the surrounding "associations" cross or infiltrate, so that, as far as I can judge from the birdlife, there is no distinct transition aspect to the animal life here. 7:30 a.m. - Birds noted from our campsite last night or this morning are as follows, mostly in full song, and so giving the impression of great numbers. Pacific Nighthawk (many, first out at 7:20 last evening and still in flight this morning in brilliant sunshine at 6:30; "feathered whang" heard whenever I was awake during the night); Screech Owl (heard two during the night, trilling in different pitches); Dusky Poorwill (heard calling during the night from the bushy and stony

Collector: Grinnell - 1925 Location: Lassen Section Date: June 12, 1925 Page Number: 2460

slopes of Inskip Hill); Calif. Woodpecker; Nuttall Woodpecker; Calif. Purple Finch (very common and in full song here in the black oaks); Linnet (equally common and in full song); Western Tanager (one in full song, as I write); Cassins Vireo and Western Warbling Vireo (equally in evidence); Wood Pewee (common); Ash-Throated Flycatcher ( "buckaroo" song heard early in the morning from slopes of Inskip Hill; Black-Throated Gray Warbler (several singing males); Lutescent Warbler (one singing male) Western Lark Sparrow (several); Western Chipping sparrow (common and singing); Green-backed Goldfinch (singing birds almost continually within hearing); Wren-tit (heard song from bushy slopes of Inskip Hill; Valley Quail (sentinel call of male in distance); Plain Tit (one pair, in black oaks); Slender-billed Nuthatch (very common); Bullock Oriole (one heard); Morning Dove (several have flown past); The "stream" right here is now dry - all the water taken out for the ranches around Payne Creek P.O. But down below here a few rods a narrow canyon begins, cut down thru the lava cap, and there, there are potholes with water, the source, apparently, for the birds of these woods. Along the ravine are luxurious golden oaks, densely blooming syringia (Philadelphus), ash trees, etc. Up in the rocky walls are bushes of Cercis and Rhus Trilobata.

Collector: Grinnell - 1925 Location: Lassen Section (Mineral) Date: June 14, 1925 Page Number: 2463

Both yesterday and today a pair of Evening Grosbeaks have been seen; not on the ground yet, but in flight well up between the fir tops, calling loudly as they go. Saw a Sharp-shinned Hawk, female, in flight thru the lodge-pole pines adjacent to the nearest willow-bog. Dixon and I both have looked thru the thick-topped trees in the vicinity, to no avail so far. Several Siskins are about, mostly in flight, above. There is an abundance of small flycatchers about, foraging and singing up high in yellow pines and firs, but going down into the ceanothus bush, too. Have found two nests, one building and one with one fresh egg (yesterday) and bird sitting. Whether these are Wright or Hammond Flycatchers will depend definitely on shooting; and I will shoot no birds hereabouts, save any (?) taken with nests. Hear one Olive-sided Flycatcher from top of huge yellow pine on hill. Wood Pewees are fairly common. Modoc Hairy Woodpeckers are commonest, adults only, about, foraging industriously on fallen rotting lodge-pole and yellow pine. Have seen one male White-headed Woodpecker, and have heard a Pileated Woodpecker; abundance of the work of the latter on dead firs down clean to the ground. Last night I heard a Pacific Nighthawk; curiously this species is far less abundant here than down around Inskip Hill where the life-