294 A COURSE ON ZOOLOGY. 



this they are aided by the stiff feathers of the tail. The 

 FIG. 245. 



LARK (Alauda arvensis). 

 FIG. 246. 



RAVEN (Corvus corax). 



wrens, chickadees, tits, wagtails, and sparrows are pas 

 seres, and, indeed, the order is named from the latter 



