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Size:
15" long.
Price:
$109.00 US
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Description:
Female
and juvenile Redheads are brownish-gray overall, with gray legs,
black eyes and a gray bill with a black tip. Males in breeding
plumage have a gray body, black rump and breast, and a bright
rufous head with a yellow eye and a light blue bill with a black
tip. The male in non-breeding plumage (from July to September)
is overall dark brown, but still has a dull reddish head. Redheads
are a little smaller than the similar looking Canvasbacks, with
a rounder head, a lighter back, and a more typically duck-shaped
bill.
Habitat:
Redheads
nest on marshy freshwater lakes, ponds, slow moving rivers and
other wetlands in prairie zones. During migration they gather
on large lakes and they spend the winter on sheltered saltwater
bays and estuaries and some inland lakes.
Behavior:
Redheads
usually gather in small flocks, often mixed with other diving
duck species. But in the winter they congregate in very large
flocks, made up of tens of thousands of birds. Although they
are considered divers, they often feed by dabbling. A notable
behavior of the Redhead is their tendency to parasitize, or lay
eggs in other duck's nests. Many ducks will lay eggs in each
others nests, but the Redhead takes this practice to another
level. Female Redheads regularly parasitize each other, and at
least ten other species of duck, and some non-duck species as
well. Most females parasitize in addition to raising their own
brood, but some females may be entirely parasitic, not raising
their own brood at all. Sometimes, dump nests occur that are
untended and never incubated, but may have up to 87 eggs in them.
Diet:
The
leaves, stems, seeds and roots of aquatic plants make up the
majority of the diet. Many aquatic invertebrates are also eaten,
especially in the summer.
Nesting:
Nests
are located close together in dense marshes, especially areas
with dense bulrush, above shallow water or on dry land. The female
builds a bulky bowl out of vegetation and, if it is in water,
anchors it to some emergent vegetation. The nest is then lined
with down. Actual clutch size is difficult to determine due to
the Redhead's parasitism, but clutch size usually ranges between
6-14 eggs. The female incubates for about 23-29 days, during
which time, the male leaves. About a day after hatching, the
female leads the young away from the nest to water, where they
feed themselves. The young are capable of flight after 60-65
days.
Migration
Status:
After
pair bonds dissolve the males may fly hundreds of miles north
to gather on large lakes and go through a flightless stage. The
main migration is fairly early in the fall, peaking in August
and September. Spring migration usually lasts from February to
May. The Redhead is the only duck that winters in greater numbers
in the interior rather than on the coast, and in Washington numbers
during migration are heavier in the eastern half of the state
than the west.
Conservation
Status:
Although
still a common duck, the total population of Redheads is far
below historic levels and they have experienced a sharper decline
than most ducks in recent years. Loss of nesting habitat is their
greatest threat. Distribution patterns of Redheads changed dramatically
during the 20th century and they are now common in some areas
where they used to be scarce.
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