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One of the loudest and most colorful birds of eastern back yards and woodlots, the Blue Jay is unmistakable. Intelligent and adaptable, it may feed on almost anything, and it is quick to take advantage of bird feeders. Besides their raucous jay! jay! calls, Blue Jays make a variety of musical sounds, and they can do a remarkable imitation of the scream of a Red-shouldered Hawk. Not always conspicuous, they slip furtively through the trees when tending their own nest or going to rob the nest of another bird.

Crows are thought to be among our most intelligent birds, and the success of the American Crow in adapting to civilization would seem to confirm this. Despite past attempts to exterminate them, crows are more common than ever in farmlands, towns, and even cities, and their distinctive caw! is a familiar sound over much of the continent. Sociable, especially when not nesting, crows may gather in communal roosts on winter nights, sometimes with thousands or even tens of thousands roosting in one grove.

Of the birds classified as perching birds or 'songbirds,' the Common Raven is the largest, the size of a hawk. Often its deep croaking call will alert the observer to a pair of ravens soaring high overhead. An intelligent and remarkably adaptable bird, living as a scavenger and predator, it can survive at all seasons in surroundings as different as hot desert and high Arctic tundra. Once driven from much of its eastern range, the raven is now making a comeback.

A common bird of western forests. Steller's Jay is most numerous in dense coniferous woods of the mountains and the northwest coast, where its dark colors blend in well in the shadows. Except when nesting it lives in flocks, and the birds will often fly across a clearing one at a time, in single file, giving their low shook-shook calls as they swoop up to perch in a tall pine.

Black-billed Magpies add much to western landscapes, both with their flashy appearance and with their big bushel-basket nests in trees. In an earlier era, farmers and ranchers tried to exterminate this species, but to no avail, and it is common today in open country and even in towns in the mountain west.

This is the "blue jay" of parks, neighborhoods, and riverside woods near the Pacific Coast. Pairs of California Scrub-Jays are often seen swooping across clearings, giving harsh calls, with their long tails flopping in flight. They readily come to backyard bird feeders. Until recently, this jay was considered part of the same species as the Woodhouse's Scrub-Jay; the two were officially "split" in July 2016.

Like a smaller edition of the American Crow, but with a more nasal voice, and typically found near water, the Fish Crow is very common in parts of the southeast. On the coast, it hunts in salt marshes and tidal flats, and scavenges on the beach. Inland, it ranges through swamps and along rivers. In recent decades it has extended its range farther and farther inland in some areas, especially on the Atlantic coastal plain and far up the Mississippi Valley.

A hiker in the north woods sometimes will be followed by a pair of Canada Jays, gliding silently from tree to tree, watching inquisitively. These fluffy jays seem fearless, and they can be a minor nuisance around campsites and cabins, stealing food, earning the nickname 'camp robber.' Tough enough to survive year-round in very cold ÃÛèÖAPPs, they store excess food in bark crevices all summer, retrieving it in harsh weather. Surprisingly, they nest and raise their young in late winter and early spring, not during the brief northern summer.