Image from the Biodiversity Heritage Library.
Contributed by Museum of Vertebrate Zoology, University of California, Berkeley.
| www.biodiversitylibrary.org
Transcription
Feb 16 Punta Suarez, Isla Espanola (Hood), Galapagos.
three feeding Coco spizas. A Conorotus spectone
tries at a pit removing small gravel, stones, and pieces
of grass stems, the smaller objects with the feet or beak,
the larger with the foot using the head as a brace.
The feet seem to be used in rapid succession. Most
smaller grave stones are siezed in the beak and lifted
out and thrown aside. Several small stones were
siezed with the beak and dropped in the bottom of the pit,
thus kicked out. An (1 gm. stone was flipped out of the
pit while the bird pulled on a 61 gm. stone moving
it from a verticle position (wedged between gravel)
to horizintal one at one side of the pit, and thus kicked
the stone out of the pit using the feet-beak-brace system.
It removed a 63 and a 34 gm stone which were em-
bedded in the gravel vest to each other in rapid suc-
cession, with 3 seconds. I could not see what it was
eating but the bottom soil was heavily covered with chaff
from grass, and presumably bird seeds. This bird
dug a pit 6