The Roadside Census 119 



TABLE IV. 

 Numbers of Diffnent Species Seen 



Showing Effects of Weather, Character of Country 

 and Length of Trip 



Average Number of Species 

 Seen on Each Census 



16.6 



14.5 



16 



22 



17 



12 



These figures are not direct]}- eompai-able as iii Tables 

 II and II r, tor the average length of tlie ditferent censuses 

 varies so ninch. However, the depressing effect of the 

 rain is almost as evident in the lessened niunbers of species 

 seen as in the total numbers. The greater variety of birds 

 in a mixed environment over those on tlie prairie alone is 

 evident from tlie 22 kinds observed on the average trip of 

 17 miles in woods, in comparison to the 10 seen on the 

 average trip of 27 miles on the prairies; most of the 

 •' woods " censuses included some prairie. In this table 

 the noon census of July ^>rd is omitted because of its un- 

 usual heat; if it is inchnled, the number of species seen in 

 woods would be 19 on a trip of 10 miles. 



The greatest number of different kinds of birds seen 

 on any one trip was 'M and the least 4. Both of these were 

 short trips, entirely through woods; the first was through 

 more varied country than the second, but most of the blame 

 for the minimum number can probably 'be laid to the ex- 

 cessive heat at that time. 



TABLE V. 



Largest and Smallest Number of Species 

 Seen on Trips of 10 Miles and Over 



Average No. 

 Date Time of Day Distance I'lace Species seen 



each Census 



Woods ; Arbuckle Mts. 31 



Woods ; Piatt Nat. Park 25 



Prairie; Garvin Co. 9 



Woods; Pushmataha Co. 4 



