
Hatching Curve Prepared from Data of 273 Aged Broods 
Figure 1. 
of 14 Species. 
JUNE 
AUG. é5 
JULY 
MAY 
25 
20 
1955 
20 
rae ee 
15 
15 
10 
10 
8/16 - 
8/19 - 
8/2 - 
7/26 - 
7/19 - 
7/12 - 
7/15 - 
6/28 - 
aw /21 - 
6/14 - 
6/7 - 
5/31 - 
5/24 - 
5/17 - 
5/10 - 
22 
15 
8/1 
25 
18 
ll 
7/4 
27 
20 
13 
6/6 
30 
23 
16 
