496 NATATORES. LARUS. KITTIWAKE. 
Pate 94. Fig. 1. Represents the Adult Bird in summer 
plumage. 
General Bill one inch and a half long from the forehead to the tip, 
descrip- 
ime to which latter it arches gradually ; of an intermediate 
Adult colour between lemon and wax-yellow. Gape reddish- 
“oe orange. Orbits of the eyes the same. Head, neck, 
Plumage. under plumage, and tail, pure white. Mantle, scapu- 
lars, back, and wing-coverts, fine pearl-grey. Exterior 
quill, having the whole of its outer web and the end, 
black, the second with the end and greater part of the 
outer web the same; the third with its end and but a 
small part of its outer web the same; the fourth and 
fifth having the ends only black, and being terminated 
by a small spot of white. Legs and toes greenish- 
black. 
Fig. 2. Represents this Gull after the first autumnal moult. 
Yearling = Auriculars, hind part of the head, and spot in front of the 
Bird. : : : 
eyes, blackish-grey. Chin and under parts white. 
Mantle deep pearl-grey. Wing-coverts (particularly 
near the ridge of the wing and the shoulders) spotted 
with clove-brown. The three first quill-feathers black, 
except where a band of white margins the inner webs. 
Tail having the outmost feathers on each side white, 
the rest with a blackish-brown bar at the tip, about 
three quarters of an inch in width. Bill tinged with 
blackish-green. Legs and toes deep oil-green. 
Young. The young of the year, that is, before the first general 
moult, have the spot in front of the eyes, the auriculars, 
and the nuchal crescent, deep blackish-grey. The back 
deep pearl-grey. The upper ridge of the wing greyish- 
black. The scapulars and tertials, with part of their 
outer webs, black. Tail, with the exception of the out- 
most feather on each side, having a broad black bar 
along its end. Bill black. In this state, or a little 
farther advanced in age, it is figured in the later edi- 
tions of Bewicx’s British Birds. 
