Image from the Biodiversity Heritage Library.
Contributed by Museum of Vertebrate Zoology, University of California, Berkeley.
| www.biodiversitylibrary.org
Transcription
13 Feb.
Punta Suarez, Espanola ( Hood ) Island, Galapagos
I would transcribe as: che wew about 3&+ 1/8 sec long.
The (?) are very spotted and look like young birds. Little sign of body weight on the bird I skinned. G. conirostris is somewhat more common than I suspected, but far scarcer than the finches at Academy Bay (c.= to the fuliginosa pop. close). In the morning I heard two songs and later heard one male give both in succession. The short song is given at a slightly higher pitch than its long song, but both are much deeper than fuliginosa.
The short song may be transcribed c che wew, about 1/2 a second long. The long song is very buzzy, with much the same quality as the song of Platyspiza and may be transcribed as chiwurrmm, about 1 second long. The species also has a high pitched whistle, seeeeeeun, like the other finches but I hear it infrequently. The note is a chisp, like a golden-crowned sparrow as I recall. A few of the birds I saw later were in trees, and they forage in the low mesquites. They usually sing 2'-6' from the ground but the bird I took was singing on the ground, and I saw 2 or 3 other birds singing from the ground. By far the greatest amount of foraging takes place on the ground. Much of this is in the normal hop and jump style but they also have a most unique method of feeding; they wedge the bird in to a crevice, either between two large bowl rocks, or under a small lava rock, or at the base of a brush. When the bird is wedged in to the crevice, the bird picks vigorously with its feet, as best as I can tell point with one then with both together as if it were running with traction the bird,