* 
” . 
Perret. NATATORES. THALASSIDROMA. 537 
4 
FORK-TAILED STORM-PETREL. 
TuarAssiproma Buxitockt1, Mihi. 
PLATE CIII. Fie. 1. 
Procellaria Bullockii, Flem. Br. Anim. 1. 136. No. 219. 
Procellaria Leachii, Steph. Shaw’s Zool. 13. 219. pl. 25. 
Pétrel de Leach, Temm. Man. d@’Orn. 2. 812. 
Tuts Petrel, which is about one-third larger than the pre- 
ceding, was first discovered at St Kilda, and ascertained to 
be a distinct species by Mr Buttock in 1818, during a tour 
round the coast of Scotland, principally undertaken with a 
view to investigate its ornithology. I have, therefore, in 
imitation of Dr Fremine, and in justice to the original dis- 
coverer, adopted the trivial name of Bullockii, instead of 
that of Leachw, bestowed upon it by Temmincx in his 
*¢ Manuel d’Ornithologie.” Several of these birds were found 
by Mr Buttock at St Kilda, it being the season of incuba- 
tion; and subsequent observation has shewn that they an- 
nually resort to the island for this particular purpose. They 
have also been repeatedly found, within a few years past, in 
various places inland (like the preceding species) in a dead 
or exhausted state, among which I may mention two in the 
possession of the Rev. R. Hammonp of Swaffham in Nor- 
folk, one of which was taken in Gloucestershire, and the 
other found dead upon a warren in the former county. Sir 
Witir1am Jarpine also possesses one, taken in a dying state 
in Dumfriesshire ; and Mr Erron of Redland, near Bristol, 
informs me that four or five were picked up last winter in 
that neighbourhood, all in a helpless condition. The habits of 
this bird are similar to those of the Common Storm-Petrel, 
with which, notwithstanding its superior size, it has in all 
probability been often confounded when seen upon wing. 
It breeds in similar situations, laying a single egg of a large 
size, rounded shape, and entirely white. It feeds upon ma- 
VOL. IT. Mm 
Incuba- 
tion &e. 
Food. 
