INTEODrOTIOir. 



97 



(Begulus cristatus) is a yet more attractive example of a very 

 small group of but six species. 



There is a very lovely group of little blue and black Australian 

 Birds which have' a somewhat similar aspect to "Wrens. Their 

 fifteen species constitute the genus Malurus. 



Fig. 101. 



The Swallow (Sirundo riistica). 



With its small tail and shortish biU, the "Wren may remind 

 the reader of another lover of trees which resides with us all 

 the year round. This is the Nuthatch {Sitta coesia), which is so 

 noticeable for its habit of rvmning up and down the trunks of 



