LARIDA. 611 
back, scapulars and wing-coverts, and has quite done 
so in the most forward one: this one indeed is 
quite in adult winter plumage, except a few of the 
secondary quills, which retain a little of the old 
brown markings; but for this and the black on the 
bill he could not be distinguished from the adult 
bird in winter; but the other two have many of the 
brown feathers remaining on the upper parts, espe- 
cially on the wing-coverts; the primary quills are 
not changed, the dark part being dark dusky brown, 
and there is no white spot at the tip; the tail- 
feathers are all mottled with dark brown; the breasts 
and flanks much clouded with pale brown; the legs 
and feet of all three are pale flesh-colour. The 
adult bird in summer has the bill yellow, with a 
patch of red on the angle of the lower mandible; 
irides straw-yellow; the whole of the head, neck, 
breast, belly, flanks, tail and tail-coverts pure white ; 
the back, scapulars, wing-coverts and tertials gull- 
grey; the longest of the scapulars and the tertials 
tipped with white; the longer primary quills are 
nearly all black, with gull-grey on some part of the 
inner web, and distinct triangular patches of pure 
white at the tips. The only change in the winter is 
on the head and neck, which are then streaked with 
palish brown; the legs and feet are pale flesh- 
colour. 
The eggs are of a light olive-brown, spotted with 
two shades of dark brown: they are very much like 
