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Only one species of Oidemia was mentioned. 
0. perspicillata, or Surf Scoter, commonly known 
by the gunners on the coast as the Skunk head 
! Coot. In addition to this species, we have the 
Velvet Scoter or White-winged Coot ( 0. fusca ). 
| which is more common than the preceding and 
the American Scoter or Butterbill Coot, O. amer- 
’ icana, which is rarer, but found under the same 
circumstances. The young of 0. perspicllata and j 
0. americana resemble each other very much \ 
and can easily be confused, which accounts for 
the latter being often overlooked. 
0 4 & O.Xi. Aug-1886, p. 
///. 
Ducks of Oohaaset, Mass., 1860-92 
O.H.B. Boston, Mass. 
21- White-winged Scoter (165). Abundant 
during the fall. This species seems to be the 
least shy of the three and on this account are 
killed in large numbers. 
Q.& O.Vol.17, June, 1892 p.91 
'•■ j avor Bircc, i\ atiuc- et. Mass. 
O-eorjje H. Mack ay’ 
General Notes, 
Oidemia deglandi. — Feb. 20, 1891. — Off the entire north side of the 
island from Great Point to Muske'get Island where they had been living 
during the winter, I saw so many thousands of these Ducks, that for the 
first time in my life I gave up in despair at being unable to arrive at any 
satisfactory conclusion regarding their numbers. I will, however, state (for 
that I am certain of) that there were several hundreds of thousands. 
They remained until March 22, 1891. Nothing like such numbers has 
ever before been seen here. They were for the greater part, as far as my 
observation showed, immature birds. In November, 1890, some five or 
six hundred (estimated) frequented the Hummuck Pond until driven out 
by continual shooting at them. On Oct. 6, 1891, during a severe storm 
about four hundred came into the Hummuck Pond, and continued to 
frequent it, increasing to about fifteen hundred by Nov. 1, 1891. 
During the entire winter of 1892, there have been none to speak of living 
along the north shore of the island, and I account for it by their having 
eaten up all the shell-fish food last winter. In February, 1892, however, 
some thousand Scoters were in the habit of coming into the harbor in the 
early morning to pass the day, returning again to the Sound about half 
past three to four o’clock in the afternoon. Many of them were mated at 
this date. 
Anh ft , July, 1892. p. 305. 
m 
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