16 



THE USEFUL BIRDS 



snails, which are often found to be the hosts of the " sheep 

 fluke." This bird, in common with the White-fronted Heron 

 (Blue Crane), makes war upon the mollusc hosts, and thus 

 considerably reduces the danger and loss, especially to our 

 western graziers. 



Nest. — Cup-shaped ; made of mud, and hned internally 

 with grasses ; placed near water, and generally in a eucalypt 

 on a horizontal bough. 



Young Magpie- Larks. 



