POMATORHINE SKUA 457 
Allied Species and Representative Forms.—M. chilensis, 
with bright chestnut under-parts and axillaries, inhabits 
both sides of South America, from lat. 12° 8. to the Straits 
of Magellan. 
M. antarctica, a stouter form, sooty-brown in colour, is 
found in the Falkland Isles and Southern Ocean. 
M. maccormicki, a very pale representative, inhabits 
Victoria Land, from lat. 71° to 76° 8. and long. 171° to 
178° E. (Saunders). 
POMATORHINE SKUA. Stercorarius pomatorhinus 
(Temminck). 
Coloured Figures.—Gould, ‘ Birds of Great Britain,’ vol. v, pl. 
(95) Dresser; ‘Birds of Europe,’ vol. viii, pl. 610; Lilford, 
‘Coloured Figures,’ vol. vi, pls. 32, 33 ; Booth, ‘Rough 
Notes,’ vol. iii, pls. 40-42. 
The Pomatorhine Skua is in all likelihood a regular 
annual visitor during autumn and winter to British waters, 
but much rarer on its passage northward in spring. It 
usually appears in limited numbers, though during certain 
seasons quite remarkable migrations have taken place. It 
is more often met with on the eastern sea-board of Great 
Britain than on the opposite side. On the Norfolk coast! it 
appears to be the most plentiful species of Skua, occurring 
chiefly after heavy gales. Stevenson mentions a game- 
keeper who had thirty in his possession at one time, and 
probably nearly all Pomatorhines. Large numbers were 
recorded in 1874, 1879, 1880, and 1881. Furthermore, Mr. 
Caton Haigh records them for successive years from the 
coast of Lincolnshire (‘ Zoologist,’ 1902 and 1908). 
This Skua has appeared on the Solway Firth as late as 
December 22nd (Macpherson), and Messrs. Harvie-Brown 
and Buckley, in their ‘ Fauna of Sutherland and Caithness,’ 
p. 235, state that it ‘“‘frequents the oceans and seas 
of the Outer Hebrides in some numbers every summer 
of late years.” Moreover, a specimen is ‘‘ recorded by 
' On the Suffolk coast, however, according to Rev. Julian Tuck, this 
Skua is rather rare, there being only two records (December 38rd and 19th, 
1903) of its occurrence for “the last ten years’ (‘ Zoologist,’ 1904, pp. 
33, 34). 
