Valley population occurs, required that intensive kill surveys be carried 
out on managed hunting areas and in the vicinity of concentration areas to 
give as accurate daily kill data as possible. 
The information presented outlines the cooperative kill surveys carried 
out by the Bureau and the Wisconsin Conservation Department in the vicinity 
of the Horicon National Wildlife Refuge during 1959-60 to obtain statistically 
valid kill data through an area ground sample system and a mailed question- 
naire. 
Suggestions are offered on possible adaptation of the Horicon kill 
survey plan for use on other areas where it is necessary to determine cum- 
lative goose kill as the hunting season progresses. 
Suggestions are offered regarding determination of need for intensive 
area kill surveys, procedures for determining area of influence for local 
goose flocks, and modification of sampling methods to meet requirements for 
kill data in the vicinity of other concentration areas. 
During both 1960 and 1961, there was a close correlation between 
data obtained through the Horicon ground kill survey and the mail question- 
naire, as shown below: 
TOTAL SAMPLED 
(Does not include State-managed blinds) 
1960 1961 
Ground Survey _ 6,215 6,674 
Mail Survey 6,776 6,594 
