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Contributed by Museum of Vertebrate Zoology, University of California, Berkeley.
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Transcription
E.L. Kabatim
1954
Hyla regilla (1)
April 8 El Capitan meadow, 3950 ft., Yosemite Valley,
margina Co., Calif. Description of breeding pond
under species account of Bufo boreus although
no toads now in evidence this locality. At
11:15 A.M. I collected a half dozen egg clusters
near margin of the pond. Most clusters were
in 6-10 inches of water and attached to blades
of grass or other pieces of vegetation. Average
of 3 counts of number of
eggs were 30. The stages
varied from yolk plug to
emerging tadpoles. Norm Wickenheim
told me that Hyla chorus have
been audible for about one month. The
onset of Hyla breeding activity may have been
the first part of March in the Valley. The
largest free-swimming toads I was able to
net were only 8-10 mm. long and there were
not abundant. However, the egg clusters were
plentiful. Daytime chorus was common at this
pond or elsewhere in Valley meadows. The
calling would generally cease when I got
within 20 feet of any of the males congregated
in or over but later it continued again as
I moved further away. The only adults I
saw out in the daytime were a few
in or right at edge of a pool SE of the