Image from the Biodiversity Heritage Library.
Contributed by Museum of Vertebrate Zoology, University of California, Berkeley.
| www.biodiversitylibrary.org
Transcription
Mayhew
1950
May 20 Mallard 28.
Conaway Ranch, 2 mi. east of Woodland, Yolo Co., Calif.
or flew back toward a flooded field.
However, I was unable to locate her nest.
In that area the wheat is very thick +
about 4 feet high, so that one would
almost be on top of a nest before
he could see it.
At 11:45 A.M. I visited the pothole 1 mile
north of the old ranch headquarters. I
found a ♀ with 8 young about 2 weeks
old. I looked around the edge of the
pothole, hoping to find her nest + perhaps
be able to tell how many eggs she had
incubated, but I couldn't find the nest.
May 30 At 4:30 P.M., when I reached the grain
fields, I saw a total of 12 ♀ flying in
out of the wheat + going to the flooded
rice fields. Therefore, I didn't walk through
the grain at this time. Every one that I
saw was flying out of the wheat fields.
II The ♀ on the pothole still has 8
youngsters. All of them seem to be healthy.
May 31 At 10:45 A.M. I started walking through
wheat fields + covered 6 more miles in
wheat without finding a trace of a
nest. This was still in the area where
the majority of ducks were seen looking
for nesting sites. This makes a total
of 12 miles of wheat covered without
finding a single nest + only one
young brood.