-32- 



carolinensis and many are probably killed during the hunting season. 

 Continued reduction of habitat by real estate developments and 

 cutting of the old-aged, mixed pine-hardwood stands which are the 

 prime habitat, have doubtless contributed to population decline as well. 



The Maryland darter ( Etheostoma s ellare ) is a small and rather 

 nondescript fish found in only two streams, Deer Creek and the east 

 branch of Swan Creek, both tributaries of the Susquehanna in Harford 

 County, Maryland. While the population size is unknown, it is assumed 

 because of the very limited habitat to be rather small. Since the 

 species appears to be endemic at the periphery of the range of its 

 closest relatives, it has not been abundant for rather a long time. 



The bog turtle ( Clemmys muhlenbergi ) as its name suggests, is 

 limited to wetland areas in the northeast and the southern Appala- 

 chians. Because of its rather secretive behavior its numbers are 

 difficult to determine. Its decline can be inferred both from the 

 destruction of its rather limited habitat and the high value placed 

 on it by pet shops because of its scarcity. It has been protected 

 in Maryland, the only state in the Bay region where it occurs, since 

 1972. 



The osprey (Pandion haliaetus ) is not an endangered species , but 

 populations are declining in many places along the east coast — an 

 example of a rare, declining, or depleted species. Annual production 

 to guarantee replacement for a stable population has been estimated 

 at between 0.95 and 1.30 young fledged per breeding female. In only 

 a few parts of the Bay is this figure reached every year. Despite 



