MONTHLY WILDLIFE RESEARCH LETTER 
Vol. 2, No. ^ 
Page b 
Table 2.—Average prices paid to Illinois hunters and trappers for raw 
furs during the 1957-58 and 1958-59 seasons. 
Species 
Average 
1957-58 
Price Per Pelt 
1958-59 
Mink 
$10.23 
$11.05 
Beaver-"- 
b.69 
b. 59 
Raccoon 
.91 
.77 
Skunk 
.79 
.80 
Muskrat 
.71 
.68 
Weasel 
• b3 
.57 
Red Fox 
.21 
.33 
Gray Fox 
.11 
.20 
Opossum 
.13 
.15 
-"-Prices on beaver are for the 1957 spring season and 1958 spring season. 
W-61-R-2 F. Greeley, J, Ellis 
Different levels of calcium were fed to hen pheasants during April 
and May in an effort to establish standards of the effects of low calcium which 
may be used to detect calcium deficiencies in wild birds. Egg production con¬ 
tinued low at calcium levels of 1.09 per cent or less, but the birds receiving 
2.01 and 2.3b per cent of calcium produced nearly one egg per day (table 1). 
Although the weights of eggs appeared to vary slightly with the amount 
of calcium in the feed (table 1), the weights and volumes as well, appeared to 
be characteristic of individual hens rather than of calcium in the diet. 
In two hens fed low calcium diets, the bones were noticeably weak and 
brittle. These birds were autopsied for bone ash determination. 
Table 1.—Weights of eggs (in grams) from pheasants fed different levels 
of calcium. 
: Per Cent Calcium 
m Diet 
Period - . . 0,37 
0.63 
1.09 
2.01 : 2.3 b 
. No. Avg. 
! Eggs Weight 
No. Avg. 
Eggs Weight 
No. Avg. 
Eggs Weight 
No. Avg. 
Eggs Weight 
No. Avg. 
Eggs Weight 
April 13-May 31 19 31.2 5b 29.2 6 6 30.b 192 32.8 230 32.8 
