PETRELS 91 
Wings long and pointed. Feet webbed. Tail rounded. Upper- 
parts sooty-black. This colour extends down on each side of the 
posterior end of the body, except for which and brown mottling 
on the side of the neck, the under-parts are white, The rarer 
great-shearwater, which is to be seen in autumn, may be dis- 
tinguished by its larger size (19 in.) and brownish upper-parts. 
Nest. Ina burrow made in the soil, on the slopes of a sea- 
cliff, or island, sometimes in rabbit holes or in the recesses 
of rocks and under stones. Material: chiefly grass; some- 
times no material. The species breeds in colonies. 
Egg. One. White. Av. size, 2°39x1-67in. Laying begins 
May. One brood. 
181. Fulmar, mollymauk [Fulmarus glacialis glacialis (Lin- 
neeus)]. Seen off all our coasts, but breeds only on the west 
and northern Scottish coasts and islands, and a few places 
on the Irish coasts. 
Bird. Length 19 in., i.e. about the size of the common- 
or External tubular nostrils (see Fig. 
06). Beak hooked at the tip and 
mostly yellowish. Feet webbed. Mantle 
and tail grey. Wing quills mostly dusky. 
Rest of plumage white or varying shades 
of grey. 
est. On the ledges, in the recesses, 
or in a hollow in the vegetation-covered Fic. 106 
slopes of sea-cliffs. Occasionally tops of pins 
stacks. Sometimes no materia], sometimes a few grasses, &c., 
or fragments of stone. Species breeds in colonies. 
Egg. One. White, occasionally traces of red spots. Av. 
size, 2°88 x 195 in. Laying begins in May. One brood. 
182. Storm-petrel [Hydrobates pelagica (Linneeus); Procel- 
laria pelagica Linnsous}]. Seen off all our coasts, chiefly in 
spring and autumn. Breeds on the islands off our west coasts, 
from Scilly to Shetlands, and off the Irish 
coasts. More rarely on E. Scottish coasts. 
Bird. Length 6 in. Distinguished 
from all species outside its own suborder 
(Petrels, Shearwaters, Fulmars, Alba- 
trosses) by the prominent external tube- 
shaped nostrils, which give the suborder 
its name Tubinares. Feet webbed. Beak 
and legs black, the former with hooked 
tip. Plumage black, except the con- 
spicuous white of the posterior end of 
the body (see figure), and the thin white margins on the 
major wing-coverts. The rarer Leach’s forktailed-petrel- re- 
