12 Beyer, Allison, Kopman, Birds of Louisiana. [jar? 



ecological differences naturally to be expected on account of the 

 differences in altitude and latitude between the northern and south- 

 ern parts of the flood-plain. But probably of more importance is 

 the occasional occurrence of modified forms of the blufflands type 

 of country protruding into the upper half of the alluvial plain. 



The relation of the Red River bottoms to their contiguous coun- 

 try is by no means homologous to the case of the Mississippi River. 

 The sharpness of distinction between the Mississippi bottoms in 

 Louisiana and the adjoining upland country is not duplicated in 

 the case of the Red River, although the transition in the latter 

 case may be more direct. 



Of the pine regions in Louisiana, the uplands of short-leaf pine 

 and the long-leaf pine hills have about equal extension. The short- 

 leaf pine uplands are confined almost entirely to the northwestern 

 section of the State. There is a small area in the southeast, being 

 an extension of this region as it occurs in Mississippi; in southeast 

 Louisiana it occurs between cane hills on the west and long-leaf 

 pine hills on the east. 



The region of long-leaf pine hills occupies a large area in the 

 central and western parts of the State, and a considerable strip in 

 the east. 



The pine forests of these upland regions are diversified, of course, 

 by various broad-leafed growths, which are more or less confined 

 to creek and small river bottoms. The predominant broad-leafed 

 forms throughout the upland region of the State arc beech, oak, 

 hickory, and magnolia. 



The long-leaf pine flats in Louisiana form two widely separated 

 regions, one in the southwest and the other in the southeast. 



In the southeast, this type is the most striking antithesis of the 

 recently deposited fertile alluvial. Its peculiarity as a biotic area 

 is more readily stated than that of the fertile alluvial, yet it is by no 

 means so different from all other regions. It is preeminently the 

 habitat of such resident species as the Red-cockaded Woodpecker, 

 the Loggerhead Shrike (which never breeds in the fertile alluvial, 

 and appears to winter there in smaller numbers than the Migrant 

 Shrike), the Pine Warbler, the Brown-headed Nuthatch, and the 

 Bluebird. 



The most varied bird life of this region is to be found in the 



