BLACK-THROATED DIVER. 
191 
The Black-throated Diver, Colymbus arcti- 
cus. — Colymbus arcticus, Linn. — Plongeon lumme, 
ou d gorge noir, Temm. — Black-throated, Diver of 
British authors. — Lesser Imber, Bewick (the young). 
— On the English shores, Mr. Yarrell states that 
of our three Divers this is the most rare, and he 
gives a record of several of the specimens which 
have been killed south of the Tweed. In the whole 
of the southern half of Scotland the same may be 
observed ; during winter, specimens may be occa- 
sionally procured in immature plumage, and we 
have seen from three to four in a day when boating 
in the Firth of Forth ; northward they become more 
common, but in all the districts where we have any 
account of the species, either in this country or 
abroad, it does not seem to occur anywhere in such 
numbers as the last described. In the lochs, beyond 
the middle part of Scotland, a few resort to breed ; 
Loch Awe is the most southerly upon which we 
have observed them. In Sutherlandshire, where 
the country is very thickly studded with lochs of 
various extent, a pair was seen in many of those of 
moderate bounds ; in one or two instances, two 
pairs were noticed ; these bred on the small islands 
or upon the banks, placing their scanty nest a few 
yards from the edge of the water in a hollow formed 
by the bird, and composed only of a few straws of 
herbage gathered around; we discovered one nest on 
a small bare islet on Loch Shin, and landing on 
the opposite side, approached, and could perceive 
