34 _ FORM AND HABIT: “THE BILL. , ’ 
that of the female is long and curved. The birds fee 
on larve, which they find in dead wood. ae et E 
peckers do, while the female uses her bill as a dl s 
We have, therefore, the singular case of two forms f'n F 
the bill arising in the same species as a result of or cav 18 a 
ing a corresponding difference in habit. | 
| rm, 
sa 
. tp eal 
