WHISTLING SWAN
(Olor columbianus).
These great birds,
measuring nearly 5 feet
in length, are still not
uncommon in the interior
and also occur in
numbers on the South
Atlantic coast. They
nest only in high
latitudes, chiefly on
Arctic islands and the
mainland from northern
Hudson Bay to Alaska.
This, the smallest of
our two species, can
best be identified by
the form of the bill.
The nostril is located
about midway between the
eye and the extreme tip,
while that of the next
species is nearer the
eye than it is to the
tip of the bill. The
present species also has
a small yellow spot
between the eye and
nostril.
During migration,
swans fly at a great
elevation in a long
V-shaped line with an
wise old gander at the
apex. Their flight is
swift and very easy and
graceful, as their wings
are of enormous size,
easily capable of
carrying even such heavy
bodies. From time to
time, the leader or some
of the band utter clear
flageolet-like notes
that reach the ground
like voices from the
sky, as the swans may be
so high as to be almost
invisible. When within
sight of their final
stopping places, they
set their wings and
gradually float
downward, circle around
so as to come up against
the winds and then plump
into the water with
great splashes. They are
most beautiful sights,
either in flight or as
they sit lightly and
gracefully on the water.
They feed chiefly upon
grasses and roots that
they pull up from the
bottom, usually in water
shallow enough so that
they do not have to "tip
up." They seldom come to
decoys, but arc shot by
gunners in ambush
between their feeding
and resting places, or
they are taken by
sailing down on them
before the wind, the
swans having to flap
vigorously against the
wind before being able
to leave the water.
TRUMPETER SWAN
(Olor buccinator).
This species measures
more than 5 feet in
length and differs
otherwise as stated
above. It is quite rare
now, but breeds west of
Hudson Bay and winters
in southwestern United
States and the lower
Mississippi Valley.
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