Catalogue of the Birds of New Bnmszoick. 63 
219. THICK-BILLED GREBE. (Podilymbus podiceps), 
A common summer visibint ; breeds. 
Family COLYMBID/E. The Loons, 
220. LOON. (Colymbus torquatus). 
Two races of Loon spend the summer in New Brunswick, 
and breed here. They have plumage of similar colors and 
markings, but one is smaller than the other, being some six 
inches less in length.* The larger bird is common on the 
lakes and rivers in all sections of the Province, seldom seek- 
ing the salt water until the rivers freeze over, while the 
smaller is rarely found away from the sea shore ; and though 
only seen occasionally in the Bay of Fundy, is quite abundant 
on the Gulf of Saint Lawrence. 
The larger race generally arrive in the vicinity of Saint 
John early in April, and leave after the winter has set in. 
221. RED-THROATED DIVER. (Colymbus septentrionalis) . 
A not uncommon summer resident, though adult males 
with the red patch on the throat are rather rare. 
Family ALCID^. The Auks. 
222. RAZOR-BILLED AUK. (Utamania tor da). 
Occur occasionally near Point Lepreaux and Partridge 
Island. Given by Mr. Herrick as common near Grand. 
Manan. 
223. SEA DOVE. DOVEKIE. {Alle nigricans). 
Occasionally blown in by heavy wind from the south during 
the winter. Given by Mr. Herrick as a common winter 
resident of Grand Manan. 
* I regret that a table of comparative measurements I had prepared was accidentally 
destroyed, and I am forced to write from memory of the relative size. 
