42 



NORTH AMERICAN FAUNA 66 



Figure 14. — Distribution of Myotis lucifugus lucifugus. 



Greatest len^h 14.0 (13.7-14.2) ; zygomatic breadth 8.4 (8.0-9.1) ; 

 interorbital breadth 4.0 (3.9-4.2) ; length of maxillary toothrow 5.1 

 (5.0-5.2). 



Habitat and Jmbits. — This species occurs almost everywhere, roost- 

 ing in the attics of houses, in hollow trees, or in caves. It is gregarious 

 by nature ; in the attic of one house near Seneca Point, Cecil County, 

 over 9,000 were foimd roosting at one time. 



The little brown myotis hibernates in winter and, in some areas at 

 least, is migratory in habits, traveling "flyway" routes from winter 

 hibernating quarters to summering areas. During these migrations 

 they may travel as far as 100 to 150 miles or more, returning by similar 

 routes to their winter quarters. The migratory patterns of Maryland's 

 little brown myotis have not been studied, but the files of the Bat 

 Banding Office, U.S. Fish and Wildlife Service, contain two records 

 of movements of this species into the State. In both instances, the 

 little brown myotis were banded in Hellhole Cave, Pendleton County, 

 W. Va., in March 1964 and were picked up in the vicinity of Deep 

 Creek Lake in Garrett Cbunty in June and July of 1964. Perhaps 

 some of Maryland's Myotis l/ucifugus population winters in caves in 

 West Virginia and Virginia, and travels north to forage in Maryland 

 during the summer. Others that winter in Maryland may venture 

 further north into Pennsylvania in the summer months. 



