Image from the Biodiversity Heritage Library.
Contributed by Museum of Vertebrate Zoology, University of California, Berkeley.
| www.biodiversitylibrary.org
Transcription
July 28. The rain was on and off all morning
and into the late afternoon. A few
crossbills were encountered during the dry
periods, all recorded on tape 56A.
Mainly those appear to be lone males,
likely on their way to feed their mates
on nests or to forage. A lone bird
appeared at approx. 12:30 pm and
was giving type 2 calls -- this bird was
captured and found to be a late-aged juvenile
male. The pattern continued throughout the
afternoon, and there were heavy clouds in the
sky throughout the afternoon. At 6:30 pm a
female appeared (alone) from the S, tape-
recorded pre-capture. She gave type 2 calls,
but was measured to be the size of type 1
or type 4 birds. She (bird 354) had a
brood patch and was found to have a large ovary and
enlarged follicles, with 3 or 4 follicles approximately
2mm in diameter. This female was kept
overnight, as was bird 358.
It
rained at night, but the rain ended.
July 29 The pattern of occasional Type 2 birds (mainly males
giving song then flying into the tall
ponderosa pine at the campsite. The