TANGARID^E: Tanagers 



205 



S.V. Common. Low, hot 

 river-valleys of southwestern 

 half of Arizona and adjacent 

 portion of California along the 

 Colorado. In cottonwoods and 

 willows. 



Cooper lanaqer 



SWALLOWS. Family Hirundinidaj 



Feed on insects taken exclusively on the wing. Nest in a cavity of some 

 sort, natural or artificial, or made by the bird; or built of mud on a tree 

 trunk or building. 



Southwestern California 

 S. V. Apr. -Sept. Common 

 locally. Nests in widely sepa- 

 rated colonies in timber of 

 mountains, or, rarely, about 

 city buildings. 



Arizona Known to nest in 

 very few localities. Chiefly a 

 migrant. 



S.V. Apr. -Aug. Abun- 

 dant. Nests in colonies on 

 rocky sea-side cliffs, under 

 eaves of buildings, or on pine 

 trunks in high mountains. The 

 requisites for its presence are a 

 sheet of open water where it 

 may drink in flight, and mud for 

 its nest. 



