290 A COURSE ON ZOOLOGY. 



world. Some are very plain in color ; others are crested 

 FIG. 239. 



WOODPECKER. 



FIG. 240. 



THE NIGHT-JAR (Caprimulgus europseus). 



or marked with brilliant red. The common flicker is 

 an insectivorous bird closely allied to the woodpecker. 



