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Contributed by Museum of Vertebrate Zoology, University of California, Berkeley.
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Transcription
ELKadstern
1956
Bufo boreas
Richard
Feb. 7
1.3 mi. N, 0.2 mi. W of Civic Center, Central Costa
Co., Calif. - Dyla first heard along railroad tracks
again SW of Albany Hill about two weeks ago.
Gerry Robinson and I made a check of Richard
pond sites 9:15-10:15 P.M. tonight. Weather
warmed up past four days. Air ting. Tonight
varied between 8-10° C., no freeze. The ponds
A & B are small lakes after excessive winter
rainfall. We quietly approached pond B from
N end where a ditch of water almost extends to
Sanford Street. No toads heard but Dyla
in loud chorus. Adult toads out in water.
One ♂ croaked 11.5° C. at 9:20 P.M. Water
temp. 11.8° C. Air 1" above wet grass at edge
of pond 9.6° C. We began a census of pond B,
covering 2/3 area of pond border and over shallow
south end (pond about 125 yards length) approx.
count: 46 ad. ♂, 4 ad. ♀ and all in anglexia.
No toads out of water. None toe-digged, and
we did not dig any toads tonight.
Pond A likewise high with water but less
spread out since it lies in a deeper bowl
between raised railroad beds. More toads
seen here along borders of entire pond. Estimate
75 ♂, 6 ♀ all adult and all in the water.
One smallish but breeding size ♀ found unat-
tested. All other ♀'s in anglexus. No calls
heard. Greatest concentration of toads at NE