14 



CAIilFOKXIA FISH AMI CAMI: 



sites, and in nine cases the desertions of aests were traced directly to 

 this cause. 



Six desertions were directly traced to ukui's acj ivities. The dis- 

 turbances of irrigators traveling the canal banks with their dogs were 

 responsible for five, and one was descried when the writer flushed an 

 incubating goose from her nest while two crows were circling overhead. 

 Believing thai the nest mighl be destroyed by these birds, the writer 

 carefully covered the eggs, but the goose never returned. 



z 



Ul 



o 

 a. 

 a 



o. 



70 



60 



50 



40 



30 



20 



10 



Fig. 9 



