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Contributed by Museum of Vertebrate Zoology, University of California, Berkeley.
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Transcription
Mallard
2.
Mayhew 1949 May 14 Conway Ranch, 2 miles east of Woodland, Yolo County, Calif.
close proximity to one another. This
wasn't seen last week, so apparently
the territories are not being defended as
much as before. On one occasion, 10 males
were seen pursuing a single female. The
entire procession dropped to the south
bank of the drainage ditch at the south
end of the ranch. Very shortly, however, the
birds again rose singly & in pairs, but
the female did not rise while I was
watching.
May 22 In a flooded rice field, 11 males were
seen in a rather loose group in one
rice check. In addition, one pair of ducks
were seen within 50 yards of this group
of drakes.
a hen was flushed from a ditch bank
(south side) about 100 yards west of the
end of a row of trees (2 rice levees
from the trees), which was near a tule
swamp just east of the main canal. She
had laid one egg at the spot, but there
had been no nest construction whatever.
The egg was lying on the ground, surrounded
by fairly high weeds (24 inches average height).
The egg was warm to the touch, as though
she had been sitting on it, but not as
warm as a newly laid egg usually feels.
She didn't circle the area as the hens
usually circle their nests when disturbed,