355 
The great dissimilarity in the plumage 
of the two sexes, has occasioned some 
authors to consider, and consequently to 
describe this bird as two distinct species ; 
the male under the title of Goosander, and 
the female under that of the Dun-Diver. 
To make quotations of the reasons given 
in favour of this opinion in various works, 
would be quite superfluous, as it would 
extend this article to an unnecessary length. 
We shal I content ourselves with laying before 
our readers, the following extracts from 
Montagu : in the Supplement to his Orni- 
thological Dictionary, under the head of 
Dun Diver, he says " Nothing has per- 
plexed us more than the discrepancy of 
opinion concerning some of the Mer- 
gansers; nor can we after so many years 
indefatigable search for the truth offer 
any thing satisfactory from personal ob- 
servation ; but we are induced to continue 
in our former opinion, that the Dun 
Diver and Goosander are really dis- 
tinct, not having heard any thing adduced 
to alter that opinion. If indeed we 
are to rely on the transactions of public 
