116 
LARID.E. 
near Rouen, one on the borders of the Rhine, and an¬ 
other on the coast of Holland; this latter was a young 
bird. 
The food of this species consist in marine insects, which it 
obtains chiefly by searching the sea-shores during low- 
water. 
The breeding-localities of this species are the same as those 
of the Arctic tern, in whose company it is met with on the 
coast of Greenland. 
The eggs, three in number, are deposited on the ground; 
they are said to be of an olive ground colour, numerously 
spotted with brown. 
The measurements of Sabine’s Gull are as follows :—entire 
length thirteen inches : the beak from the forehead one inch; 
the tarsus one inch and a half; the tail five inches ; the wings 
when extended thirty-three inches. 
The adult bird in summer has the entire head lead 
colour, which colour is abruptly terminated by a band 
of deep black; the upper plumage is deep gull grey; 
the ridge of the wing and the extremities of the secon¬ 
daries are white; the primary quill-feathers are black, 
with very conspicuous white tips ; the lower part of the 
neck, the breast, and all the under parts pure white, in¬ 
cluding the tail, which is much forked; the beak is black 
with a yellow tip; the legs and feet black; the iris deep 
sepia; the eyelid and the inside of the mouth bright 
red. 
The young of the year have the head white, with 
blackish spots; the scapulars and wing-coverts are black¬ 
ish grey, intermixed with yellowish brown; the neck 
and breast are pale ash colour; the belly and upper and 
under tail-coverts are white; the tail not so much 
forked as in the adult, and of a soiled white, with black 
