Vol. 25, No. 6 
Page 3 
Two to 8 pheasant cocks crowed consistently on each of the 7 sanctuaries at 
Boaota Since pheasants became common at Bogota, prairie chickens have 
disappeared from 2 sanctuary units and are barely "hanging on on 2 other unit . 
This spring 95? of the chickens were concentrated on 3 central sanctuaries. 
Fortunately, no pheasants were seen or heard on or near the sa « taa ^ e * ^, e 
Marion County during booming ground surveys in early Apr 1. Thus, we felt it 
a J the listeninq-stop route in Marion County in early May. A large 
Undscape of about 36 ml 2 (39 km 2 ) that surrounds the sanctuaries near Kmmun y 
and Farina has also been routinely surveyed each spring since 1963. 
Ecology and Management of White-tailed 
Deer - W-87“R 
C.M. Nixon, L.P. Hansen, 
J.E. Chelsvig, P.A. Brewer 
During the 1st 2 years of this study, we captured a " d ™f ked ” ^ S 2 a nd 
have been able to monitor the dispersal movements of 23 of them. Of these 
fawns, 21 ( 72 . 5 ?) are known to have moved from their capture areas. 
Uhv deer disperse from winter concentration areas is unknown, but one 
possible cause considered by other researchers is that the W»« o 
influences the movents of the fawns Of the 2od~r that^e obs^ ^ 
orphans, 12 were n0 ":°f^ a "': h \ r J) a * d , 0 of the non-orphans (S3?) are known 
zz'Zr.n it srrtTi sr.ir 
the orphans but the difference is not sign were 9 pr ; bibIy n0 n-orphans, 
future sa" IT "s i gnffi Z\ difference between orphans and non-orphans 
in the tendency to move. 
Cooperative Waterfowl Research - W-88-R 
F.C. Bell rose, S.P. Havera, 
G.A. Perkins, H.K. Archei 
By early March 1982, numbers of ducks in Illinois were already on the 
increase when Robert Crompton made the 1st spring aerial-census flight. In late 
March, duck numbers peaked at 3^7,335 in the I11inois Va]I ley (7 * o e pea 
for the fall of 1981) and 135,225 in the Mississippi Valley (22^ of tall 
ak \ These numbers were considerably higher than the 1931 spring peak for the 
mi no is Valley which was 206,600 ducks (40* of fall 1980 peak) and considerably 
!ower° than 3 the" \ 931 spring peak for the Mississippi Valley, which was 396,000 
ducks (W of fall 1930 peak). 
