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