Plate CCCVI. Male, and Young in winter.
Adult in summer with the bill black, the feet livid greyish-blue,
their inner sides tinged with flesh-colour; head and neck dark
greenish-blue with purple gloss; on the throat a small transverse
patch of white longitudinally streaked with dusky; above the middle of
the neck two large patches of white similarly streaked, separated in
front to the distance of an inch, but almost continuous behind; lower
parts glossy white, excepting the feathers on the sides under the
wings, which are black, each with two, three, or four elliptical white
spots, a faint dusky band across the vent, the lower tail-coverts,
which are brownish-black tipped with white, and the axillar-feathers
and large wing-coverts, which have a dusky streak along the middle;
sides of the neck at its lower part longitudinally streaked with black
and white; upper parts glossy black, variegated with spots of white in
regular transverse slightly curved lines, having the convexity
backwards, the spots small and roundish towards the neck and sides,
larger and somewhat four-sided along the middle of the back, largest
and rectangular on the scapulars, very small and roundish on the hind
part of the back and tail-coverts; upper part of wing similar, with
smallish spots; alula and quills brownish-black, a few of the inner
secondaries only having two white spots at the end of the tail
brownish-black, of twenty feathers. Young in winter with the bill pale
yellowish-green, the ridge and tip of the upper mandible dusky; upper
parts dark greyish-brown, each feather margined with lighter, lower
parts white, sides of the neck below streaked with dusky, sides of
body dusky, without spots.
_Adult_, 32-7/8, 57-1/2. _Young Male_, in winter, 31-1/4, 54-1/2.
During winter dispersed over the United States, in Texas, as well as
along the coasts of the Atlantic, and the north-west. Breeds from
Massachusetts northward to very high latitudes. Common.
Great Northern Diver or Loon, Wils. Amer. Orn. v. ix.
Colymbus glacialis, Bonap. Syn. p. 420.
Colymbus glacialis, Great Northern Diver, Swains. & Rich. F.
Bor. Amer. v. ii. p. 474.
Loon or Great Northern Diver, Nutt. Man. v. ii. p. 513.
Great Northern Diver or Loon, Colymbus glacialis, Aud. Orn.
Biog. v. iv. p. 43.