Lhe Sand Martin. 183 

go into the bank for a yard or more, while others have 
only been placed a short distance from the outside: 
this may be from a large stone being in the way, and 
thus impeding their progress. This work is carried 
on early in the morning, and costs some time before 
the tenants are satisfied. The Sand Martin often 
wanders miles away from home; even in the brooding 
season I have seen them flying from the bank towards 
Mew aleemave watched them out of sight im the 
direction of a large piece of water, where there have 
been several skimming over the surface of the water, 
with others of the Swallow tribe, and no other Sand 
Martin colony nearer than their own. 

