71 



Four eggs measured as follows: 71 x 40 mill. — 64 x 40 — 63 x 

 43— 671 X 431. 



PJialacrocorax cUIopJms, Swains. This species, so closely resembling 

 the Florida Cormorant, I found breeding only at one place, Wapita- 

 guan ; it was not so abundant as the P. carbo, being in the propor- 

 tion of about one of the present to four of the other. The northerly 

 part of the breeding-place was occupied exclusively by the present 

 species, the central part by both, and the southerly by the common 

 species only. Though so early in the season, there was hardly a trace 

 of the crest remaining on any of the birds. Their nests were 

 apparently as bulky as those of the common species, and as they are 

 certainly occupied for more than one year, I am inclined to think it 

 not uncommon for the nest built by one species to be occupied by the 

 other the next season. As a general rule, they preferred the lowest 

 ledges, where the two species were breeding in common ; but the 

 highest nest of all was one of the present species. Where the ledge 

 was long enough to admit of several nests, they were generally aU 

 occupied by the same species ; where there were only two or three, 

 much more frequently by the two. In one or two places near the 

 summit, where the rock was broken in such a way as to present a 

 series of little niches, they seemed to alternate, as if by design. The 

 two species were evidently on terms of perfect friendship, and when 

 not sufficiently near to be distinguished by color or size, no difference 

 could be detected in their habits or motions. The nests contained 

 the same variety of eggs and young as those of the preceding species ; 

 if anything, the number of newly laid eggs was proportionably less. 

 The eggs, four in number, were of a more regular oval, but otherwise 

 similar in appearance, and the difference in size by no means pro- 

 portioned to that of the birds themselves. At the time of Audubon's 

 visit none of the present species were seen at Wapitaguan, and he 

 says that he never found them breeding on precipices, but always on 

 flat rocks. I was unable to visit the breeding-place mentioned by 

 him, near Cumberland Harbor, though I passed near, both going and 

 returning, and even remained two days at Tele cle Baletne, in hopes 

 that the sea might go down sufficiently to make it possible to land on 

 the rock. 



Four eggs gave the following measurements : 60^ x 361 mill. — 

 57 X 401—56 x 38 — 59 X 39. 



Thallassidroma Leacliii, Bon. These birds were frequently seen, 

 but do not breed in numbers or in many places on the North shore. 

 I found them but at two places, on Gall Island, at Romaine, and on a 

 small island between Mecattina and Bras D'Or. As the opposite 

 shore of Newfoundland is lower, and the islands less rocky, it probably 

 breeds there. On the Atlantic shore it is found breeding everywhere 

 that a suitable island exists, from Mount Desert, in Maine, to the 



