CATALOGUE OF CANADIAN BIRDS. 35 
inhabited by this beautiful gull ; it nests abundantly at the head 
of Norton bay. (JVe/son.) A common bird at St. Michael when 
the ice breaks up after the middle of May. The great breeding 
ground of the species is further south; on the Pribilof islands 
and some of the western Aleutian islands this species breeds in 
thousands ; breeds sparingly at St. Michael. (Zurner.) Osgood, 
Grinnell, Palmer and Stone all report this bird as common in the 
parts of Alaska visited by them. 
BREEDING Notes.—This bird has the same habits as R. drevz- 
vostris. In building its nests it uses more grass and less mud- 
cement than that species does. The eggs are more pointed at 
the smaller end and lighter in ground colour, with numerous 
splotches of dark brown. (£2dott.) 
41. Red-legged Kittiwake. 
Rissa brevivostris (BRucH) Lawre. 1858. 
Seen in considerable numbers at Unalaska, May 26th, 1877; 
abundant on the Pribilof islands, especially on St. George 
island, where they congregate in thousands and breed. (JWVe/son.) 
Not a common bird at St. Michael; the Aleutian and Pribilof 
islands are its home. (Zuvrner.) 
BREEDING Hasits.—This bird reaches the Pribilof islands 
about May gth for the purpose 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 rgached 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. (£d/o?z.) 
XXI. LARUS Linnavus. 1758. 
42. Glaucous Gull. Burgomaster. 
Larus glaucus BRUNN. 1764. 
The most common large gull in Greenland, breeds with the 
other gulls. (Avct. Man.) The commonest guilon Ellsemere 
3% 
