Widmann — A Preliminary Catalog of the Birds of Missouri. 203 



Bam Swallow is more common northward than .southward, 

 in the prairie region oftener than in the Ozarks and rare in the 



southeast. 



*614. Iridoprocne bicolor (VieilL). Tree Swallow. 



Hirundo bicolor. Tachycineta bicolor. Hirundo viridis. Wood Swallow. 

 White-bellied Swallow. White-belly. 



Geog. Dist. — North America, north to Newfoundland, Lab- 

 rador, Ungava, Mackenzie and Alaska; breeding from Vir- 

 ginia, Mississippi and Kansas, Colorado, Utah and California 

 northward and wintering from the South Atlantic and Gulf 

 coasts southward to Bahamas, Cuba and over Mexico to 

 Guatemala. 



In Missouri a scarce summer resident in the bottoms of large 

 rivers as far south as the southern border of Dunklin Co., but 

 more commonly northward. The first arrive the middle of 

 March and the last are with us till the end of October. Tran- 

 sients are with us in small troops in spring from March 15 to 

 May 15, and in large flocks of many thousands in the Missis- 

 sippi bottom from the middle of September to the middle of 

 October, after nearly all the other swallows are gone (October 

 28, 1885, Fayette, Howard Co.; October 31. 1899, Keokuk, 

 Currier) . 



*616. Rip ARIA riparia (Linn.). Bank Swallow. 



Hirundo riparia. Cotyle and Cotile riparia. Clivicola riparia. Sand 

 Martin. 



Geog. Dist. — Northern Hemisphere; in America breeding 

 from Georgia, Louisiana, Texas, Arizona and northern Mexico 

 north to the arctic region. In winter through Mexico, Central 

 and South America to eastern Peru and Brazil, also West 

 Indies. 



In Missouri chiefly along the Mississippi and Missouri Rivers, 

 breeding in smaller or larger colonies, either directly over the 

 water on the banks or over quarries, in railroad cuts, etc., on 

 the blufTs sometimes a mile or more from the river. They are 

 among the latest swallows to arrive at their breeding stands, 

 seldom before the fourth week of April (earliest April 21, 1883 

 and 1887, St. Louis) and are generally not building in large num- 

 bers before the fifth of May. Young and old collect in immense 

 flocks in the river bottoms as early as July 1, scattering while 



