BIRDS. 



293 



familiar, and make their nests very near country houses. 

 FIG. 243. 



BLUEBIRD (Sylvia sialis), 

 FIG. 244. 



COMMON CREEPER (Certhiafamiliaris). 



The creepers are common all over the northern hemi- 

 sphere ; their feet are adapted to tree-climbing, and in 



25* 



