Vol . 23, No. 6 
Page 3 
is to maintain a maximum of quality nest habitat on each sanctuary 
obtain breeding populations dispersed approximately in proportion to ava.labl 
habitat. This goal has not been attained at Bogota. 
Although the prairie chicken population on the Bogota Study Area increased 
W/ between 9 the sprincs of 1979 and 1980 (MWRL 23(4):2-3), the flock remains 
^cen^ted This spring (1980), 65% of both the cocks and hens -re observed 
on 23% of the sanctuary acreage at Bogota-the booming grounds on / eatt f r 
Field-McGraw sanctuary unit. From 1963 through 1979 an average °f ^0% of th 
cocks and 4% of the hens observed during booming season were oca ted in t 
area? Nest'success was high (50-'00% hatched) throughout teO-yearperio of 
1963-72 on the Yeatter-Field-HcGraw unit despite high densities of birds and 
nests but since 1973 has ranged from 24 to 50 %. 
Th<= 160-acre Donnel ley-Val ters unit, 16% of the sanctuary acreage at Bogota, 
has supported^n average o) 20% of the cocks ar.d 22% ob^rvjjd *,rUg 
the booming season from 1SS7 through 1979; respective figures for 1980 were 22/„ 
of the cocks and 24% of the hens. Nest success has averaged 55%. 
Proportionately 'ower numbers of prairie chickens and nests have been the 
rule on the more peripheral sanctuaries and often, out rot always, higher success 
has resulted. This, lower densities appear to be partly compensated by higher 
nest success. However, 2 tracts, the 57-acre Mark and UO-ecre Galbreath 
sanctuaries, have not supported booming grounds or arty known nesting for the 
Dast 4 or 5 years. Also, the l4Q~3cre McCormick end ^22-acre Otis-Fuson 
sanctuaries remain much below their potential for prairie chickens. Woody cover ^ 
reduction, control of free-ranging dcgs and other predators, control P ' 
and upgrading fields designated for prairie restoration are some of the more 
important management activities to deal with ;n Jasper County. 
in Marion County this spring, ail 5 sanctuary units were supporting booming 
grounds either within or near the sanctuary boundaries. On each, the ratio of 
acreage to chicken cocks was in better balance, than in Jasper County. Woo y 
cover reduction, cleanup of oid buildings and junk, and praine restoration are 
some of the more important management activities needed to upgrade the sanctuaries 
in Marion County. 
Ecology and Management of Whi te-tai led .Oesr - 
W-87-R 
C. M. Nixon, 
L. P. Hansen, 
J. E. Chelsvig 
The winter range of a radio-mon itcred, adult, female deer, and the methods 
for determining range were described last month (MWRL 23(5):4). The present 
report describes the winter range of a doe captured as an 8-month-old fawn 27 
February 1980. 
The young doe was captured in a pasture 1,240 m (-75 mile) east of the 
east boundary of Allerton Park. From 29 February to 24 April, this doe usually 
remained in the area around the capture site-referred to hereafter as the 
winter range. She was usually seen with an unmarked fawn of unknown sex and an 
unmarked adult female. 
