CATALOGUE OF CANADIAN BIRDS. 33 



Breeding HABiTs.^This bird reaches the Prybiloft Islands 

 about May gth for the pupose of breeding. It uses dry grass 

 and moss cemented with mud which it gathers by the fresh 

 water pools and ponds scattered over the islands. The nest is 

 solidly and neatly put up, both parents working. The nests are 

 placed on inaccessible shelves and points of mural rocks and can 

 scarcely be reached except a person be lowered by a rope. Two 

 eggs are the usual number, though occasionally three will be 

 found in the nest. The eggs are the size and shape of hens' eggs, 

 but covered with a dark gray ground spotted and blotched with • 

 sepia spots. {^Elliott.) 



MUSEUM SPECIMENS. 



One fine egg taken by Mr. J. M. Macoun on St. Paul Island, 

 Behring Sea, Sept. i6th, 1896. Seven eggs, some of which are 

 of this species and some of the last, were also brought from 

 St. Paul Island by Mr. Macoun, but as they were procured from 

 natives their identity is uncertain. 



XXI. LARUS LiNNiEus. 1758. 

 «. Glaucous Gull. Burgomaster. 



Larus glaucus Brunn. 1764. 



The most common large gull in Greenland, breeds with the 

 other gulls. (Arct. Man.) Not rare on Hudson Strait ; breeds 

 plentifully on the eastern and southern coasts of Labrador. 

 {Packard.) Common along the Atlantic coast from Greenland to 

 Newfoundland. {Reeks.) Southward it is rare and only in winter. 

 {Jones.) One shot in St. John harbour, N. B. {Chamberlain) Com- 

 mon in the river and gulf of St. Lawrence. {Dionne ; Dr. Hall.) 

 During the winter months this bird is not an infrequent visitor to 

 Lake Ontario. It was shot at Toronto in 1884 and in 1889. {Mc- 

 Ilwraith.) Abundant on Great Slave Lake. {Ross.) A great 

 many of these gulls nest in Cumberland Gulf and are common in 

 other places. {Kumelin.) Large numbers were found breeding 

 on the ledges of high cliffs at Richmond Gulf, Hudson Bay, in 

 July, 1898. {A. P. Low.) 



Breeding Notes. — Altogether some twenty nests of this 



species were gathered, chiefly on sandy islets in the bays of 



Franklin and Liverpool ; a few of these were also found on 



islands on the Lower Anderson. Fifteen of the nests contained 



3 



