PUFFINUS. 
BIRDS. PALMIPIDES. 
137 
Gen. XCIX. PUFFINUS- Puffin. — Nostrils with separate 
openings; extremity of the lower mandible bent down- 
wardsv 
S20. P. Anglorum. Manks Puffin. — Wings longer than the 
tail. 
Will. Orn. 251. — Lyra, Sihh. Scot. 22. — Procellaria PufRnus, Linn. Syst. 
i. 213. Penn. Brit. Zool. ii. 551. — Proc. Ang. Temm. Orn. ii. 806. — 
Shearwater; W^ PAvfRngen Fanaw ; JV, Lyre, Scrabe.' — A summer vi- 
sitant. 
Length 15, breadth 32 inches; weight 17 ounces. Bill an inch in length 
before the nostrils ; blackish brown. Legs dusky without, yellowish on the 
inside. Plumage, above, black ; beneath, white ; the sides of the neck freck- 
led black and white. Female similar. — Nest in holes. Eggs 1, white.— F omw^ 
nearly resembling the old birds. — This species arrives at its breeding places 
in March, and departs in August. The young are very fat, and are sought 
after by the inhabitants, killed, salted, and eaten with potatoes or cabbage. 
Gen. C. CATARACTES. Skua. — Nostrils near the mid- 
dle of the mandible, and covered with a corneous plate, 
reaching to the base. Claw of the inner toe arched. 
Willoughby, with propriety, separated this genus from the following. 
— The species are bold, of rapid flight, and support themselves 
chiefly on the food which they compel the Gulls to vomit. 
221. C. vulgaris. Common Skua. — Plumage brown ; tail- 
feathers nearly equal. 
C. noster. Will. Orn. 265. Sibb. Scot. 20. — Larus cat. Linn. Syst. i. 226. 
Penn. Brit. Zool. ii. 529 — Cat. vuL Flem. Edin. Phil. Journ. i. 97* — 
Lestris Cat. Temm. Orn. ii. 792. — A, Sea Eagle; W, Skua, Skui, Bonxie. 
Breeds in Zetland. 
Length 25, breadth 55 to 58 inches ; weight 54 ounces. Bill 2\ inches 
long, brownish-black. The upper mandible is rounded along the margin to- 
wards the base, a little prominent in front of the nostrils above, and bent 
downwards at the end like the hawks. The under mandible is bent inwards 
at the edges ; at the apex it forms a gutter, sloping downwards ; at the base it is 
grooved laterally ; and at the junction of the two sides, beneath, there is an an- 
gular prominence. The eyes are surrounded with a narrow bare black orbit, 
and the irides are hazel brown. The legs are covered with large black scales. 
The claws sre strong, of a black colour, arched and grooved beneath. The plu- 
mage, on the upper parts, is dark rusty brown, with yellowish-white oblong 
dusky spots. Each feather is dusky -brown on the edges, and yellowish-Avhite 
at the end near the shaft. The plumage, below, is lighter coloured, and on 
the belly it is tinged with ash-grey. The feathers on the neck are wiry and 
pointed, and have a narrow oil-green spot on the extremity. The wings reach 
to the point of the tail. The shafts of the quills are white. The outer web, 
and the extremity of the first, deep broAvn ; the tips only of the rest, brown ; the 
remaining part, towards the base, is white. The covers of a few of the seconda» 
ries are white. The tail-feathers, which are twelve in number, are blunt ; the 
shafts, and the webs at the base, are white ; towards the extremity the webs are 
brown. There is no difference between the sexes, either in colour or size, in 
