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Orientation Responses of Ring-Billed Gull Chicks: A Re-Evaluation

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Part of the Proceedings in Life Sciences book series (LIFE SCIENCES)

Abstract

The mean bearing for Ring-Billed Gull chicks tested in orientation cages correlates favorably with the direction in which they will head to reach the winter range. Previous studies indicated that geomagnetic cues alone were of importance in this process. Reanalysis of data from 3 500 trials has shown that under some conditions (1) directional shifts rather than disorientation may occur, and that (2) solar cues may be used as a supplemental source of information. Severe magnetic disturbance usually results in disorientation, regardless of sky conditions. Changes in apparatus design may significantly influence results, and this problem must be entertained during data interpretation.

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  • DOI: 10.1007/978-3-662-11147-5_30
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References

  • Southern, W.E.: Orientation behavior of Ring-Billed Gull chicks and fledglings. Condor 71, 418–425 (1969)

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  • Southern, W.E.: Gull orientation by magnetic cues: a hypothesis revisited. Ann. N.Y. Acad. Sci. 188, 295–311 (1971)

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  • Southern, W.E.: Influence of disturbances in the Earth’s magnetic field on Ring-Billed Gull orientation. Condor 74, 102–105 (1972)

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  • Southern, W.E.: Migrational orientation in Ring-Billed Gull chicks. Auk 93, 78–85 (1976)

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© 1978 Springer-Verlag Berlin Heidelberg

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Southern, W.E. (1978). Orientation Responses of Ring-Billed Gull Chicks: A Re-Evaluation. In: Schmidt-Koenig, K., Keeton, W.T. (eds) Animal Migration, Navigation, and Homing. Proceedings in Life Sciences. Springer, Berlin, Heidelberg. https://doi.org/10.1007/978-3-662-11147-5_30

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  • DOI: https://doi.org/10.1007/978-3-662-11147-5_30

  • Publisher Name: Springer, Berlin, Heidelberg

  • Print ISBN: 978-3-662-11148-2

  • Online ISBN: 978-3-662-11147-5

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