Image from the Biodiversity Heritage Library.
Contributed by Museum of Vertebrate Zoology, University of California, Berkeley.
| www.biodiversitylibrary.org
Transcription
and black head with white cheek patches.
The most numerous ducks were the
mallards - more numerous than
all the other forms together. They
were in summer plumage, males
and females being very much alike.
Two large ducks were not identified.
Across the lake near the waters edge
a number of pelicans were seen.
Crossing the bay two species
of gulls were observed, - Larus
occidentalis (western gull) and Larus
heermani (Heerman gull). The first
is slightly larger than the second and
may be distinguished from it by color
ation as seen in flight. The mantle
is a dark slate color while in the
case of the Heerman, the bill is
bright red and the head and upper
neck are white.
The horizon was in all 30-35
species.