ft v « 1 ! 









«a( ,i ! jsa 





iSBWu sai 



-~^ : ,^-4 





Wildlife habitats — tidewater to timberline, bottomland hardwood in Maryland (above) to cold-stunted Engelmann 

 spruce in Colorado (below), 100 to 11,000 feet — are studied by Bureau ecologists in both direct and cooperative 

 programs. (Photo by F. C. Schmid, top; Lee E. Yeager, bottom) 



M\. 



bMXLeiik di *\£' f pjftl^i^t'f 1 



•: 



28 



