32 BIRDS OF OHIO. 



difficulty of identifying this tern renders it probable that 

 many occurrences are not noted. 



"Mr. Langdon gives it as a rare migrant in the vicinity 

 of Cincinnati, where Messrs. Dury and Freeman note six 

 specimens taken May 4, 1879. My own experience with 

 the bird in this vicinity is limited to a single specimen taken 

 in the fall of 1861 or 1862." (Wheaton.) 



18. (70.) STERNA HIRUNDO Linn. 282. 



Common Tern. 



Synonyms: Sterna fluviatilis, S. wilsonii. 



Wilson's Tern, Sea Swallow. 

 Nuttall, Man., II, 1834, 271. 



As its name implies, this tern is the common form during 

 the migrations wherever there is a lake or large stream. It 

 is not everywhere common, however, but may be locally so 

 anywhere in the state. It breeds in large numbers on the 

 islands just north of our boundary, and less numerously on 

 a few of the smaller islands within our boundary. It has 

 been reported as breeding at Sandusky, but no nests appear 

 to have been found there. The birds seen during the sum- 

 mer in the bay and that vicinity are clearly not breeding 

 birds but wanderers in search of food. 



During the second week in May it is abundant along the 

 lake front, then usually appearing in loose companies of 

 from ten to fifty or more individuals. 



The migrations occur during the first week in May, or 

 the last week in April, and from the first week in August 

 well into October or even November in the southern coun- 

 ties. 



19. (72.) STERNA DOUGALLI Montag. 283. 



Roseate Tern. 

 Synonyms: Sterna paradisea. 



Paradise Tern. 

 Audubon, Orn. Biog. Ill, 1835, 98. 



According to the records this species has been found in 

 Ohio less than a half dozen times, once at Cincinnati by Dr. 

 Frank W. Langdon, and the others at the lake shore. 



