FULMAR PETREL. 167 
olive brown, others with a much greener hue, and they are 
blotched with darker brown, and a few spots of rust colour. 
314. POMARINE SKUA—(Lestris Pomarinus). 
Merely a casual visitor, although more frequently noticed of 
late years than before ornithology became so favourite a study. 
315. RICHARDSON’S SKUA—(Zestris Richardsonit). 
Arctic Gull, Black-toed Gull, Arctic Skua.—This species is the 
most numerous of all those which visit this country. It breeds 
in the Hebrides, in the Orkneys and in Shetland, and numerously 
enough in the two localities last named. The female has been 
observed to make use of the same artifices as the Partridge and 
the Grouse to decoy an intrusive dog or man away from its nest 
or young. The nest is built of moss or ling, on some elevated 
knoll amid marshy ground, or on the moor, and contains two eges. 
These are of a greenish olive-brown colour, spotted with dark 
brown. This Skua not only restlessly and pitilessly persecutes 
the Kittiwake and other Gulls in order to obtain its own food from 
them at second-hand, but also makes free with their eges for the 
same purpose in a very marauder-like fashion.— 77. 5, plate XIL. 
316. BUFFON’S SKUA—(Lestris Buffonii). 
Mr. Yarrell distinguishes between this bird and the true J. 
Parasitieus, and consequently adopts the scientific name I have 
now given. This Skua can only be considered a rare and acci- 
dental visitor. 
317. FULMAR PETREL—(Procellaria glacialis). 
Fulmar, Northern Fulmar.—The Fulmar breeds in incredible . 
numbers at St. Kilda, but is rarely met with, even in winter, 
about the southern coasts of England. Both old birds and 
their young on being touched eject a considerable quantity of 
