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Bird migration is a seasonal movement of birds between breeding and wintering grounds that occurs twice a year. It is typically from north to south or from south to north. Migration is inherently risky, due to predation and mortality. The Arctic tern holds the long-distance migration record for birds, travelling between Arctic breeding grounds ...
Zugunruhe is borrowed from German; it is a German compound word consisting of Zug, "move, migration," and unruhe (anxiety, restlessness). The word was first published in 1707, when it was used to describe the "inborn migratory urge" in captive migrants.
The Rostocker Pfeilstorch, found in 1822, demonstrated that birds migrated rather than hibernating or changing form in winter.. A Pfeilstorch (German for 'arrow stork', pronounced [ˈpfaɪ̯l.ˌʃtɔɐ̯ç]; plural Pfeilstörche, [-ˌʃtœɐ̯.çə]) is a white stork that is injured by an arrow or spear while wintering in Africa and returns to Europe with the projectile stuck in its body.
The Bird Migration Explorer, launched on September 2022, is an online tool that allows visitors to track the journeys of more than 450 migratory birds that regularly occur in the United States and ...
Some birds undergo a migration that boggles the mind, traveling thousands of miles one way, perhaps from the heart of South America. Think hummingbird, purple martin, scarlet tanager, barn swallow ...
Bird migration is controlled primarily by day length, signalled by hormonal changes in the bird's body. [19] On migration, birds navigate using multiple senses. Many birds use a sun compass, requiring them to compensate for the sun's changing position with time of day. [20] Navigation involves the ability to detect magnetic fields.
The East Atlantic Flyway is a migration route used by about 90 million birds annually, passing from their breeding areas in the United States, Canada, Greenland, Iceland, Siberia and northern Europe to wintering areas in western Europe and on to southern Africa. [1] [2] It is one of the eight major flyways used by waders and shorebirds. [3]
The Pacific Flyway is a major north-south flyway for migratory birds in the Americas, extending from Alaska to Patagonia. [1] Every year, migratory birds travel some or all of this distance both in spring and in fall, following food sources, heading to breeding grounds, or travelling to overwintering sites. [2]