Image from the Biodiversity Heritage Library.
Contributed by Museum of Vertebrate Zoology, University of California, Berkeley.
| www.biodiversitylibrary.org
Transcription
e Benedict P.
1963
Loxia curvirostra
10 Aug. 0.3mi S, 0.2mi W Boca Springs, 5700', Nevada Co., Calif.
about 30 birds were seen here, in and about
Boca Springs in the open clay Pine Forest.
(Jeffrey Pine, at least, present). The birds were
mostly in small groups, 2 to 4, and were
usually seen only in flight as they gave the
"jip jip" call note. This bird taken was
1/2 way up a 90' pine trees on one of the smaller
bare branches, apparently feeding on pine cones,
3 or 4 birds were in the same area and nearby tree.
Its crop was full of pine seeds (distended)
and broken pine seeds and small dark
grit filled its stomachs. Morel noticed only
on this crop of tweet while it was being skinned
(wings not examined) and gonads very small,
disturbed when I skinned the bird. wt after c.
48 hrs on ice in plastic bag.
The next A.M. heard the "geea geea jip"
song a little, as well as a "jip jip gea" version
and a trill with the same quality of the "jip"
note, quite reminiscent of Spizella breweri song.
They sang mostly from about 8am to 5 A.M.
P.S.T, then gave the flight notes (jip jip)
the rest of the day. Many trees with numerous
large cones & the birds apparently coming for
cones, not water.