FIGURE 6, Morning Count at Station Number 8, Shows com- 
parison of number of doves found by absolute census with 
averages heard during five crew counts and one-man count, 








\ 
8 
GB Absolute Census 
7 C2. Five Two-man Crew C ount 
C) One-man Call Count 
wo fed 
oH 6 
S 
Oo 5 
‘SD. 
4 
a 
E3 
= ae Vos 
2 Bie 
| i 
0 0 or seee are t 
June July 
FIGURE 7. Evening Count at Station Number 8. 
8 
WB Absolute Census 
§5:) Five Two-man Crew Count 
? 
(_} One-man Cai! Count 
on 
a 
5 
Q 9 
S 
= 4 
r 
533 
z 
2 
| pate ie 
June July. 

