66 
BULLETIN 292, U. S. DEPARTMENT OF AGRICULTURE. 
Murdoch, Seale, and Mcllhemiy found it common in migration. It 
breeds commonly at the mouth of the Yukon and on the shores of 
Norton Sound and south along the Alaska coast to the mouth of the 
Kuskokwim (Nelson). 
Winter range. — The only place where Sabine's gull has been found 
in winter is on the coast of Peru. Here it is common in Callao Bay 
from December (Markham) to April (Macf arlane) . It was also taken 
BREEDING 
OCCURRENCE IN SUMMER 
Fig. 31.— Sabine's gull (Xema sabini). 
at Turobez, on the extreme northern coast of Peru, in September, 1872 
(Steere). Except as single birds have been found wandering far 
inland, the record for Callao Bay is the only known occurrence of the 
species for half the year, from October to April. Whenever the 
winter home of Ross's gull is discovered Sabine's gull will probably 
be found there also, for the two species arrived together at the mouth 
of the Kolyma River, Siberia, the first of June, 1905 (Buturlin), 
and were together when seen in migration in May several hundred 
miles west of that district (Buturlin) . 
