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The emblem bird of the United States, majestic in its appearance. It is not always so majestic in habits: it often feeds on carrion, including dead fish washed up on shore, and it steals food from Ospreys and other smaller birds. At other times, however, it is a powerful predator. Seriously declining during much of the 20th century, the Bald Eagle has made a comeback in many areas since the 1970s. Big concentrations can be found wintering along rivers or reservoirs in some areas.

Largest of the native waterfowl in North America, and one of our heaviest flying birds, the Trumpeter Swan was almost driven to extinction early in the 20th century. Its healthy comeback is considered a success story for conservationists. Ordinarily the Trumpeter is quite sensitive to human disturbance; in protected areas, such as some parks and refuges, it may become accustomed to humans and allow close approach.

This is one of the 'grasspipers,' more likely to be seen in grassy marshes or wet fields than on wide-open mudflats. Its spring migration is mostly through the Great Plains, with smaller numbers east to the Atlantic; the species is found coast to coast in fall, but is still scarcer in the west. The name 'Pectoral' refers to the inflatable air sac on the male's chest, puffed out during his bizarre hooting flight display over the Arctic tundra.

A close relative of the Mallard, the Black Duck is better adapted to wooded country. With the clearing of forest, it has steadily lost ground to spreading populations of Mallards. In its stronghold along the Atlantic Coast it is a hardy bird, wintering farther north than most dabbling ducks. It is among the few dabblers to prosper in tidewater areas; pairs and small parties of Black Ducks are often seen flying over the salt marsh, their white wing linings flashing in bright contrast to their dark bodies.

The sky-blue upperparts of the male Cerulean Warbler are difficult to observe in summer: At that season, the birds stay high in the tops of leafy trees in the eastern United States and extreme southern Canada. The bird itself has become harder to observe in recent decades, as its numbers have decreased in parts of its range. Cowbirds, which lay their eggs in the warblers' nests, may be finding their unwitting 'hosts' more easily as forest patches become smaller.

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.

Found in several scattered areas of North America, Sandhill Cranes reach their peak abundance at migratory stopover points on the Great Plains. The early spring gathering of Sandhills on the Platte River in Nebraska is among the greatest wildlife spectacles on the continent, with over a quarter of a million birds present at one time. Although they are currently very common, their dependence on key stopover sites makes them vulnerable to loss of habitat in the future.

The most widespread grebe in the New World, and the most familiar in most temperate parts of North America. Far less sociable than most grebes, almost never in flocks, sometimes found singly on small marshy ponds. When disturbed or suspicious, it may sink slowly until only head is above water. Rarely seen in flight. Often secretive in the breeding season, hiding in marsh, making bizarre whinnying, gobbling, cooing noises by day or night.

A sputtering, bubbling song among the cattails is a giveaway that the Marsh Wren is at home. A patient watcher eventually will see the bird as it slips furtively through the reeds or bounces to the top of a stem for a look around. Industrious male Marsh Wrens build 'dummy nests' in their nesting territories, occasionally up to twenty or more; most of these are never used for raising young, but the adults may sleep in them during other seasons.

Birders might say that this blackbird is rusty because it spends so much time in the water. In migration and winter it is usually in swampy places, wading in very shallow water at the edges of wooded streams. In summer it retires to northern spruce bogs; no other blackbird has such a northerly breeding distribution. The name 'Rusty' applies to the colors of fall birds, but it could also describe the rusty-hinge sound of the creaking song.

Teal are small ducks, fast in flight, flocks twisting and turning in unison. Seemingly a warm-weather duck, the Blue-winged Teal is largely absent from most of North America in the cold months, and winters more extensively in South America than any of our other dabblers. Small groups of Blue-wings often are seen standing on stumps or rocks at the water's edge.

Many of the dabbling ducks use their flat bills to strain food items from the water, but the big spatulate bill of the Northern Shoveler is adapted to take this habit to the extreme. Flocks of shovelers often swim along with their big bills barely submerged in front of them, straining food from the muddy soup of shallow waters. Despite their heavy-set build, shovelers are good fliers; at large gatherings, groups often are seen taking off, circling the area repeatedly, then alighting again.

Graceful in flight, musical in its pre-dawn singing, this big swallow is one of our most popular birds. Almost all Purple Martins in the east now nest in birdhouses put up especially for them. Martin housing has a long history: some Native American tribes reportedly hung up hollow gourds around their villages to attract these birds. Purple Martins migrate to South America for the winter, but before leaving, they may gather to roost in groups of thousands in late summer.