Field notes, v1752
Page 403
Image from the Biodiversity Heritage Library. Contributed by Museum of Vertebrate Zoology, University of California, Berkeley. | www.biodiversitylibrary.org
Transcription
11 June watch some crossbills after they lost interest in the decays. A group of four birds, three ♂♂ and a ♀, were seen foraging on Englishman spruce. The birds paid no attention to either the old or new cones: foraging was strictly on the new green shoots, at their very tips. I do not know whether the birds were eating the vegetation, but I think the birds were searching for arthropods. Later, I walked a bit around the "timber blowdown" area. I found a pair (♂ + ♀) of crossbills, again they began to forage on the spruce in the way described above. At a later time in the morning, a group of crossbills came around (3 ♂, 1 ♀), and I got some recordings of one ♂ and shot him. This was bird 422. Crossbills were not encountered later in the day. By before noon things became very quiet, and while five commoner cardinals continued to be heard (pine siskins, Cassius finches) crossbills certainly weren't around.