Image from the Biodiversity Heritage Library.
Contributed by Museum of Vertebrate Zoology, University of California, Berkeley.
| www.biodiversitylibrary.org
Transcription
FIELD NOTES
Doug Bell
LOCATION: Alcatraz, I
DATE: 19 May 1987
TIME: 13:11 -
TIDE: Low, 2 m rock exposed
WEATHER: Slight Haze, Cool,
Mod-Heavy Wind.
13:11 - 20 birds on cistern perimeter incubating, 3 on platform
incubating . 32 birds in perimeter, 10 on platform.
Measuring internest distances and photographing eggs.
Nest totals:
Perimeter : 136
IB : 16
Cistern : 44
186 nests