ILLINOIS AUDUBON BULLETIN 11 
TABLE 6 
COVERAGE WITHIN THE FOUR AREAS 
POSSIBLE NO. NO. COUNTIES NO. AVE eNO. GP) He 
AREA OF COUNTIES PARTICIPATING PARTY HOURS PER COUNTY 
1 Jie e567) 300 23:.9 
‘ 28 2G 7:24) 574 23.1, 
3 45 Fae oN GoM eg ey) 882 40.1 
4 24 23u (I. OF) 1593 60.6 
TOTAL 102 78 Low 3149 40.4 
As established in past years, the state has been divided into 
four latitudinal AREAS (see FIGURE 1). By knowing the amount of 
birding effort (party hours) in each county and each AREA, we can 
annually and geographically compare the relative abundance and 
distribution of each species throughout Illinois. This is most useful 
in determining population changes — especially of permanent 
resident species and the early-arriving breeding species. The basic 
AREA statistics are shown in TABLE 6 and the county statistics, in 
TABLE 7 (Column 1 is the county abbreviation as used in TABLE 
10; Column 2, the AREA in which the county occurs; Column 4, the 
number of species reported; Column 5, the number of individual 
birds reported; Columns 6 & 7, the number of observers and parties, 
respectively; Column 8, the hours of observation, inclusive (in the 
24-hour system); Columns 9 & 10, the number of miles walked (W) 
and driven (D), and hours walked (W) and driven (D), respectively; 
Column 11, the county compiler. TABLE 8 provides comparisons of 
the first five statewide counts. The complete statewide results are 
available on request from the author. 
In concluding this report, I believe that everyone deserves a 
special word of appreciation and that without their continued 
support, we would not be able to gather and assemble this 
information. The County Compilers work hard to coordinate and 
tabulate everything that is required and through their efforts the 
reliability of each report continues to improve; therefore, I express 
thanks to them all very much. I also wish to express gratitude to 
Sylvia Hackman who typed all of this material and in many cases 
transcribed or transposed material that could not be typed directly from 
the computer printouts. 
In 1977, the Count will be held on Saturday, 7 May; please set 
this day aside now. If any persons can help in counties that are 
generally not covered, please volunteer to do so; such assistance is 
greatly needed and appreciated. 
