166 Capt. C. C. Abbott on the Birds of the Falkland Islands. 
led me at one time to think that they belonged to different 
species. 
63. Larus roseiventris (Gould). (Pink-breasted Gull.) 
*' This Gull is migratory, arriving in East-Falkland Harbour 
about July 25th, almost to a day, though occasional stragglers 
occur all the year round. It breeds in the beginning of December 
in separate communities on a point of the coast or adjacent 
island. The nests are placed very thickly together, and each 
contains two, or sometimes three eggs. 
I was once inclined to think the white-headed bird in the 
plumage originally described by Mr. Gould as Gavia roseiventris 
was of a different species, but I have now altered my opinion, 
and consider it to be merely the young of the Pink-breasted 
Gull in the first year’s plumage. 
On the 24th of May I shot a Pink-breasted Gull, with a white 
head clouded with dusky, at Port Louis. The plumage of this 
bird was very perfect. On the 7th of July, however, I shot one 
of the same species; the body plumage was perfect, but the head 
feathers were in a state of transition from white to black. Most 
of the black feathers being in the quill, and the specimen being 
imperfect, I did not preserve it. 
64. Sterna cassinii, Sclater. (Tern.) 
The Tern arrives in East Falkland at the end of July, very 
shortly after the Pink-breasted Gull. It breeds in communities 
on the sea-beach, but also occasionally inland, in pairs, laying two 
(sometimes three) eggs in each nest. It disappears about the end 
of March. 
/ije 
STM 
/ 
65. Phalacrocorax carunculatus (Gm.). (King-Shag.) 
This Shag is common along the coast of the Falkland Islands 
all the year round. It breeds in the rookeries of the Rock- 
hopper Penguin (Eudyptes nigrivestis) , as I have already men¬ 
tioned in this Journal (Ibis, 1860, p. 338). The Cormorants’ 
nests are not placed together, but here and there, all over the 
rookery, amongst the Penguins’. They are composed of sea-weed 
and mud, and are raised about 4 or 5 inches from the ground. 
The eggs are three in number, of a dirty white, with a strong tinge 
of green inside, and are deposited in the middle of November, 
