CATALOGUE OF CANADIAN BIRDS. 35 
deposited early in June and are two or three in number. Should 
the eggs be removed the parent will renew the complement, but 
only one or two will be laid. The period of incubation is 
about three weeks. The young are downy and pure white on 
their first appearance, but soon change to gray with darker mot- 
tlings. (Zwurner.) 
On June 4th, near St. Michael, the first nest was found. It 
was placed ona small islet, a few feet across, in the centre of a 
broad, shallow pond. The structure was formed of a mass of 
moss and grass, piled up a foot or more high, with a base three 
feet across, and with a deep central depression lined with dry 
grass. There was a single egg. The female as she sat on the 
nest was visible a mile away, and not the slightest oppor- 
tunity was afforded for concealment on the broad surrounding 
flat. Other nests were of the same character and contained from 
one to three eggs. (Velson.) Mr. Macfarlane’s note under ZL. 
glaucous probably refers to this species. 
43. Iceland Gull. White-winged Gull. 
Larus leucopterus FABER. 1882. 
Breeds in both Inspectorates of Greenland, but more commonly 
in the southern; also observed on the east coast, and said to 
breed on the Parry Islands. (Avct. Wan.) Common in the autumn 
and winter from Greenland to Newfoundland. (Reeks.) Rare on 
the coast of Nova Scotia. (Dowmns.) A pair shot in St. John 
harbour in 1881. (Chamberlain.) Godbout River, St. Lawrence 
River, Quebec. (Dionne.) A single specimen taken at Toronto 
is in the collection of Mr.J.H. Ames. (/. H. Fleming.) 
Several nests of this species, and the parent bird, were procured 
on the shores of Franklin Bay, arctic coast, early in July, 1863 
and 1864. (MJacfarlane.) During Captain Ross’s and Sir Edward 
Parry’s first voyages many specimens of this gull were obtained 
in Davis Strait, Baffin Bay, and at Melville Island. (Richara- 
son.) This species is far less common in Cumberland Gulf than 
the Glaucous Gull; on the Greenland coasts, however, it is the 
most common species except the Kittiwake. (Awmelin.) 
44. Glaucous-winged Gull. 
Larus glaucescens NAvM. 1840. 
During May, 1877, this bird was abundant about Unalaska, 
and also upon the Akutan and Sannak islands to the east. It 
3% 
