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  1. Historical views

    Writings of ancient Greeks recognized the seasonal comings and goings of birds. Aristotle wrote that birds … See more

    Bird migration - Wikipedia

    • 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 and t… See more

    General patterns

    Migration is the regular seasonal movement, often north and south, undertaken by many species of birds. Migration is marked by its annual seasonality and movement between breeding a… See more

    Nocturnal migratory behaviour

    During nocturnal migration ("nocmig" ), many birds give nocturnal flight calls, which are short, contact-type calls. These likely serve to maintain the composition of a migrating flock, and can sometimes encode the sex of … See more

    Long-distance migration

    The typical image of migration is of northern land birds, such as swallows (Hirundinidae) and birds of prey, making long flights to the tropics. However, many Holarctic wildfowl and finch (Fringillidae) species winters in the North Tem… See more

    Short-distance and altitudinal migration

    Many long-distance migrants appear to be genetically programmed to respond to changing day length. Species that move short distances, however, may not need such a timing mechanism, instead moving in respons… See more

    Irruptions and dispersal

    Sometimes circumstances such as a good breeding season followed by a food source failure the following year lead to irruptions in which large numbers of a species move far beyond the normal range. Bohemian waxwings Bombycilla … See more

    Physiology and control

    The control of migration, its timing and response are genetically controlled and appear to be a primitive trait that is present even in non-migratory species of birds. The ability to navigate and orient themselves during migr… See more

     
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  2. Bird migration perils - Wikipedia

     
  3. Flyway - Wikipedia

    A flyway is a flight path used by large numbers of birds while migrating between their breeding grounds and their overwintering quarters. Flyways generally …

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    • The Basics of Bird Migration: How, Why, and Where

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      Bird migration is one of the wonders of the natural world. Find out what makes birds fly thousands of miles and how they find their way.

    • Drier Winter Habitat Impacts Songbirds’ Ability to …

      Oct 4, 2024 · Climate Change-Driven Drying in Caribbean Likely to Impact Birds Throughout Annual Cycle. A new study from researchers at the Smithsonian’s National Zoo and Conservation Biology Institute (NZCBI) shows …

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    • Decoupling of bird migration from the changing phenology of …

    • Bird Migration Explorer - Audubon

      The Bird Migration Explorer is your guide to the heroic annual journeys made by over 450 bird species, and the challenges they face along the way. Learn more about a species, the migratory birds at a specific location, or a conservation …

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    • 9 Awesome Facts About Bird Migration | Audubon

      Oct 11, 2012 · Whether it be in spring or fall, migration is a truly awe-inspiring phenomennon. In North America, most bird species migrate to some extent, with more than 350 species traveling between their summer ranges in the U.S. and …

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    • How and Why Did Bird Migration Evolve? | Audubon

      Apr 19, 2022 · Learn how and why birds evolved to migrate across seasons and distances, and how their genes and clocks control their journeys. Explore the debates and discoveries about the origins and adaptations of bird migration.

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