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This big 'Honker' is among our best-known waterfowl. In many regions, flights of Canada Geese passing over in V-formation -- northbound in spring, southbound in fall -- are universally recognized as signs of the changing seasons. Once considered a symbol of wilderness, this goose has adapted well to civilization, nesting around park ponds and golf courses; in a few places, it has even become something of a nuisance. Local forms vary greatly in size, and the smallest ones are now regarded as a separate species, Cackling Goose.

This fish-eating duck is the typical merganser of freshwater lakes. Its flocks are usually small, but these may combine into big concentrations sometimes at large reservoirs. Common Mergansers living along rivers may spend hours resting on rocks or on shore. The British call this bird the 'Goosander.' In some parts of Europe, with artificial nesting sites provided, the species has become a common nesting bird along city waterfronts; this has not yet happened in North America.

A spectacularly marked, sociable, noisy waterfowl. Often rests on low snags above water, and may perch high in dead trees. In North America found mostly near Mexican border, but has increased in numbers recently, partly because it will use nest boxes put out for it. In some areas (such as coastal Texas), feeding of this species has become popular, with landowners tossing out corn near ponds to attract hundreds of whistling-ducks.

Beautiful and unique, this duck of woodland ponds and river swamps has no close relatives, except for the Mandarin Duck of eastern Asia. Abundant in eastern North America in ±¬ÁϹ«Éç's time, the Wood Duck population declined seriously during the late 19th century because of hunting and loss of nesting sites. Its recovery to healthy numbers was an early triumph of wildlife management.

Abundant over most of the northern hemisphere, the Mallard is the most familiar wild duck to many people, and the ancestor of most strains of domesticated ducks. In many places this species has managed to domesticate itself, relying on handouts in city parks. Although barnyard and feral ducks may be dumpy and ungainly creatures, the ancestral wild Mallard is a trim, elegant, wary, fast-flying bird.

Mergansers are our only ducks that specialize in eating fish. The Hooded is the smallest of our three native merganser species, and often seems to be the least numerous, as it tends to live around swamps and wooded ponds where it may be overlooked. A cavity nester along wooded waterways in the temperate parts of North America, it has probably benefitted by taking advantage of nest boxes put out for Wood Ducks.

Very localized, but abundant where they occur, Snow Geese typically are seen in large numbers or not at all. Included under this heading is the 'Blue Goose,' long considered a separate species, now known to be only a color morph of the smaller race of Snow (Lesser Snow Goose). The two color forms mate with each other, and may produce young of either or both colors. A larger race, Greater Snow Goose, nests in far eastern regions of Canada and winters on the Atlantic Coast.

A diminutive diver, one of our smallest ducks, often very energetic in its feeding. Related to the goldeneyes and, like them, nests in cavities; but unlike other hole-nesting ducks, the Bufflehead is small enough to use unmodified old nest holes of Northern Flickers, giving it a ready source of good nest sites. Less sociable than most ducks, seen in pairs or small groups, almost never in large flocks. Takes wing easily from the water, flies with rapid wingbeats. The name 'Bufflehead' is derived from 'buffalo-head,' for the male's odd puffy head shape.