Field notes, v1377
Page 359
Image from the Biodiversity Heritage Library. Contributed by Museum of Vertebrate Zoology, University of California, Berkeley. | www.biodiversitylibrary.org
Transcription
23 Journal R.E.Johnson 1767 June 11 Mt. Shasta, Siskiyou Co., California (cont.) but could also be for nest site. I wasn't able to follow the other birds activities. Cliffs are 30ft high, partially overhanging, & full of crypts & holes at the point where the Finches were collected. Snow extended to the base of the cliff except in a few spots which has patches of Creeping Juniper growing. Several 3/4" black spiders & some small ants were seen on the rocks. Continuing east across the snow 200 ft or less and a flat snowless area appears. It is the only area I've seen with any kind of turf (30% or less ground cover of grass) & the only area where a bird could feed in moist ground along the snow edge. A Chipmunk was seen on an outcrop in this area. Another N-S outcrop ridge occurs 200ft to the east & several Rosy Finches have been seen on it & one collected at 1:15PM (Littoralis ♂). It had just finished a non-vigorous chase of another male. Its movement up and down the rock ridge both during & after the chase suggested territorial behavior centered on a definite piece of ground. Several other Rosy Finches seen higher up the ridge. Ridge has low (1-2 ft.) White- bark Pine growing on it in patches. 3:15PM-collected a Rosy Finch (♂ - littoralis) singing from the top of a high rock upslope from previous bird. I had observed that every 30-40 min. a bird flew over the rock from the west (flying cross-stripe) & disappeared into the Mud Creek canyon. Five minutes later a bird would fly up from the