THALASSIDROMA.
Small ; plumage black with white at base of tail ; nares in a single tube and separated by membrane; tarsus slightly longer than middle toe and claw ; ist phalanx of middle toe shorter than the two others combined.
Thalassidroma pelagica (L.). STORMY PETREL. Fr. Thalassidrome temp&te ; Ger. Sturmschwalbe ; Ad. Uccello delle tempeste ; Swed. Stormsvala.
? Above sooty black, rump black ; upper tail coverts (tipped black), base of tail and sides of under tail coverts white ; underparts smoky brown ; tail square. Bill, legs and feet black.
Wing 116-124. Tarsus 22-24. Bill .Breeds.—Iceland (Westmann Islands), Faroes, Norwegian Coast, Scotland (Islands of north and west and once Bass Rock), S. Wales, Scilly Islands, N. and W. Ireland, Brittany, S.E. Spain (Mar Menor), S. France, Corsica, Sardinia, Sicily, Malta, possibly Crete, Madeira (rare). Occurs in winter in E. Atlantic, south to W. Africa ; also Baltic and Adriatic Seas ; rare in Mediterranean east of Malta. Has been reported from Red Sea, and also east coast of N. America.