Image from the Biodiversity Heritage Library.
Contributed by Museum of Vertebrate Zoology, University of California, Berkeley.
| www.biodiversitylibrary.org
Transcription
R.B. Hamilton
1965
Acanthis hornemanni
Aug 3 Cape Thompson - Five redpolls were seen in the creek bottom. It is difficult to determine the species (they probably is only one species anyway). Their vocalization and action resemble those at the Goldfines or Pine Siskin. Four of those seen were immature.
4 About one hundred of these birds were seen. The majority were winter. A nest was found in a narrow valley from which a female was flushed. It contained three blue eggs and was made of grass lined with what looked like thistle down and located in a fork of a willow about 2 ft above the ground.
5 About thirty were seen. They are very curious and can easily be called by squeaking. They are usually seen perched in the tops of small willows.
6 Twenty-five were seen.
7 An estimated 250 were seen. They seem to be the most common bird in the willows along the creeks. Many young of the year were seen.
8 About 30 were seen. It was hard singing once.
11. About 26 were seen
12. About 15 were seen
13. About 45 were seen.
14. About 75 were seen.
Acanthis hornemanni
is now
Carduelis hornemanni
on AOU 1998