CATALOGUE OF CANADIAN BIRDS. 33 



paired the birds keep by themselves and early in June deposit 

 their eggs in a depression on the mossy top of some knoll upon a 

 rising ground. {Nelson.) 



Family V. LARlD.ffi. Gulls and Terns. 



XX, PAGOPHILA Kaup. 1829. 



39. Ivory Gull. 



Pagopkila alba (Gunn.) Coues. 1897. 



A very rare periodical migrant on the northwest coast of New- 

 foundland, Three shot in Parson pond, January 1867-68. 

 (Reeks.) One specimen observed in Halifax harbour, prior to 

 1869. {Jo7ies.) Rare along the Nova Scotia coast. {Downs.) 

 An immature bird shot at St, John ; a winter visitant at Grand 

 Manan, N.B. {Chamberlain.) Coast of Labrador. {Dionne.) Seen 

 on the edge of the ice in Hudson bay, near Great Whale river, 

 in spring and winter. Occasional birds of this species are seen 

 in the early summer among the heavy ice on the Atlantic coast 

 of Labrador and Hudson strait. A young specimen in full 

 plumage was shot at Fullerton in the end of September. {A. P, 

 Low.) Occasionally seen on Lake Ontario. I succeeded aftei 

 two season's work in obtaining a fine specimen of an adult male 

 by getting the fishermen to attach a long line to the stern of 

 their boat with a hook at the end baited with cisco. {Mcllwraith.) 

 There is reason to believe that this bird is probably a regular 

 winter visitor to Lake Ontario. (/. H. Fleming.) 



Circumpolar : eggs obtained on Cape Krabbe lat. 'j'j° 25' N. 

 {Arct. Man.) Often seen on EUsemere island and probably breeds. 

 {E. Bay.) This beautiful gull frequents Davis strait, Baffin bay, 

 and various parts of the northern shores of the American con- 

 tinent, breeding in great numbers on the high perforated cliffs 

 which form the extremity of Cape Parry, in lat. 70°. {Richardson.) 

 A rare visitor at Point Barrow ; only two being seen in the spring 

 but more common in the autumn. {Murdoch.) One specimen 

 taken at Dease lake, Cassiar, B.C., by Mr. James Porter, in 

 September, 1889. {Fannin.) One specimen was shot at Lake 

 Okanagan in November, 1897, by Mr. J. F. Studley. Mr. A. C. 

 Brooks also reports it from Okanagan. {Kermode.) Very common 



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