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Rapid ‘evolution’ of migratory behaviour in the introduced house finch of eastern North America
The house finch (Carpodacus mexicanus) of eastern North America was introduced onto Long Island, New York, around 1940. The source is presumed to be southern California, where ca. 80% of individualsExpand
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Interactions in the flexible orientation system of a migratory bird
MIGRATING birds rely on interacting compass senses: magnetic, star, polarized light and perhaps Sun compasses1,2. During the development of orientation mechanisms, celestial rotation of stars atExpand
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The concepts and terminology of bird navigation
As understanding of the processes and mechanisms of bird navigation has increased, older conceptual frameworks and terminology have become inadequate. Terminology used to refer to orientation andExpand
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Avian community structure along elevational gradients in the northeastern United States
SummaryBreeding birds were censused along four elevational gradients in the Adirondack Mountains, New York, and the Green Mountains, Vermont. The bird communities of the four gradients were basicallyExpand
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A Radar Study of the Altitude of Nocturnal Passerine Migration
On long-range radar, the diffuse, grainy echo pattern produced by passerinc nocturnal migrants frequently causes saturation of the radar scopes (PPI, RHI) up to 25 nautical miles. The development ofExpand
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Daytime calibration of magnetic orientation in a migratory bird requires a view of skylight polarization
THE orientation of migratory birds is based on a complex of interacting compass mechanisms (the geomagnetic field, stars, patterns of skylight polarization and, perhaps, the Sun)1,2. A magneticExpand
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Skylight polarization patterns at dusk influence migratory orientation in birds
Over 100 animal species are known to be able to perceive the plane of polarization of linearly polarized light; most of these are arthropods but several molluscs and vertebrates, including man, shareExpand
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Orientation cues used by migratory birds: A review of cue-conflict experiments.
  • K. Able
  • Biology, Medicine
  • Trends in ecology & evolution
  • 1 October 1993
During the late 1960s and early 1970s the accumulating evidence of magnetic orientation forced the conclusion that the orientation of migratory birds and homing pigeons is based upon multipleExpand
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Fall Migration in Coastal Louisiana and the Evolution of Migration Patterns in the Gulf Region
MANY passerine birds make long overwater flights during the course of their seasonal migrations; it is obvious that natural selection has favored these flights in spite of the risks and energeticExpand
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