ToNKS — On Birds of Cedar Point. 71 



been a favorite nesting place, is no\v inhabited and no terns nest 

 there. As nearly as can be estimated there are probably 3,000 nest- 

 ing pairs within this region, and perhaps half as many non-nesting 

 birds which range freely over the region. In the region of Cedar 

 Point there have always been considerable numbers during my stud- 

 ies. In late August and early September there have always been 

 considerable numbers of winter plumaged Black Terns about the 

 nesting islands and mingling among the flying Common Terns, add- 

 ing their protests against the unwelcome visitors. 



14. HydrocheJldoii iiif/ra siiriinnncin^ix. — Black Tern. 



A variable number of Black Terns breed in the marshes. In fa- 

 vorable summers I have counted upwards of twenty pairs, but there 

 are usually nf)t so many. I therefore can hardly agree that it is a 

 "common" breeder, but it is certainly regular. It selects for a nest- 

 ing region the somewhat open central parts of a considerable area 

 whose margins are thickly grown up with marsh vegetation so that 

 a boat can be pushed across and into the nesting area with much 

 difficulty. The nest is placed on decaying vegetation which is barely 

 more than flusli \A-ith the surface of th« water, many times, perhaps 

 always, as Mr. W. F. Henninger thinks, upon a submerged muskrat 

 house. I have found fresh eggs during the first week of July. The 

 birds are courageous in the defense of their eggs and young, even 

 striking the head of the intruder. The first birds appear in spring 

 p.ear the first of May, and the last have passed south by September 

 25 During the migrations they are not infrequently seen along the 

 river courses. 



1~'. Phalaciocorux uiirifn-s. — Double-crested Cormorant. 



Only twice have my visits to Cedar Point coincided with the visi- 

 tations of this species. On April 29, I'JOT, I found a specimen which 

 fishermen told me had been shot four or five days previously when 

 there were considerable numbers in the region of Cedar Point. On 

 May ly I recorded one specimen, and again on November 4, at Cedar 

 I*oint. If fishermen are reliable there is a regular migration of this 

 species across the region of Sandusky not far from the first of May. 

 Moseley reports one on October 7, V.)0'A. 



10. Pelecfunis cri/thi'oj'liyiichos. — American White Pelican. 



There are two records for the immediate vicinity of Oberlin. 

 Specimens were not taken but the records were made by persons 

 who are familiar with the species in other places. One was in early 

 May, ISnO, the other at the Olterlin Water Works reservoir in the 

 spring of 1897. I have been unable to secure the exact dates. 



