Image from the Biodiversity Heritage Library.
Contributed by Museum of Vertebrate Zoology, University of California, Berkeley.
| www.biodiversitylibrary.org
Transcription
J. Gauth
1986
journal
118.
11 June The two ♂♂ obtained today were processed (421, 422).
The day was cloudy only over the very highest parts of the Plateau (where I was) -- clouds formed & disappeared in place, while the surrounding desert was clear.
12) Jun. I had moved the net to a better location where I could put the poles securely into the ground. Again, crossbills came around about 1 hour post first light. The birds would not come down to the decays all day.
A group of 3 birds came around, and I was able to record 1 individual and shoot -- this was bird 423.
Male crossbills were generally in song. Birds seemed active -- in a pre-breeding state. It must be that these birds were in breeding condition without being exposed to a good seed crop.