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Contributed by Museum of Vertebrate Zoology, University of California, Berkeley.
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Transcription
Roford
#8T
231
Cynomys ludovicianus
August 25, 1935 Nr. Sharon, Barber G., Fat
10 course. sparse litter, burrows at E. edge of bottom = 27.3 ft.
(15' to 36'); there being comparatively close spaced. This is area of
Aristida. Smith's map shows burrs. Sparse, dense in areas
Aristida here (why? low visibility?). This area (± 2) also
has more dogs on W-facing slope than on E-facing. In study
area of Smith, many burrows on S-aspect slopes, few on N-aspect, but
"barrier" of bottom between. Some slopes when many burrows have
mod. ant. Andropogon, grazed to 1-2 "tall", 4 some Bout. curtisii. Some
conspicuous plants of Prolorhiza louisiana near burrow (not
eaten). Apparent cutting by C.L. of many seed stalks Andropogon
and Bgrv. On W-facing slope near blind ± 2, at uppe1l edge of
C.L. activity Bgrv. seed stalks became prominent; where C.L. have fed,
the stalks gave, & tallest grass in Aristida. Van Smith very sure
that dogs have opened up areas a few feet across in former
thick patch Aristida. Then "Dales" now have that Bushlee. Little
evidence cutting entire: Triticum Aristida found by me. || The comma
principally fall here in Solanum nortistium, now dry & leafless beet 1 ft.
tall. Seeds in prickly pods (many empty on ground). Occasional green plants of
Prolorhiza louisiana, but apparently not eaten by C.L.
August 29, 1955 Sunrise about 6 a.m. I watched area just S. of
dam, where Smith counted 44 last week. Many feeding there 6:15. 6 (jird)
+1 older one to + into; burrow when a great blue heron flew over. At
6:30 I counted 24 feeding in the area (< 1 A). Two concealed at ground
near Aristida, then gnawed at spot on if setting root. Most seemed to
be picking up seeds (?) from ground (seeds Solanum root?). || Smith:
Has heard coyote in area but has seen none or sign on C.L. town.
He has seen turtle go in unoccupied burrow. 6:58, I counted 34