THE SAND MARTIN. 



(Cotyle riparia.) 



THIS little bird has a much more extensive 

 range than either of the foregoing species, 

 being found in the New as well as in the Old 

 World. In British North America M. Bour- 

 geau obtained both birds and eggs on the Sas- 

 katchewan plains. Dr. Coues met with it in 

 Arizona, and Professor Baird has recorded it 

 from California. He says: " It furnishes almost 

 a solitary instance amongst land birds of the 

 same species inhabiting both continents per- 

 manently, and not as an accidental or occasional 



