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Navigation.

Roswitha Wiltschko1

  • 1FB Biowissenschaften, Goethe-Universität Frankfurt, Biologicum, Max von Laue-Str. 13, 60438, Frankfurt am Main, Germany. wiltschko@bio.uni-frankfurt.de.

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|March 15, 2017
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Summary
This summary is machine-generated.

Adult migrating birds use true navigation to reach wintering grounds, while young birds rely on innate genetic programming. Both strategies are crucial for successful bird migration and navigation.

Keywords:
Magnetic intensityMigration programNavigational ‘map’Olfactory inputTrue navigation

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Area of Science:

  • Ornithology
  • Animal Behavior
  • Navigation

Background:

  • Migratory birds utilize complex navigational strategies for long-distance seasonal movements.
  • Understanding these strategies is key to avian conservation and migration research.

Purpose of the Study:

  • To investigate and differentiate navigational strategies employed by adult and young migrating birds.
  • To identify the cues and mechanisms underlying avian navigation.

Main Methods:

  • Displacement experiments with migrating birds during autumn migration.
  • Observation and analysis of compensatory movements and migratory direction following displacement.

Main Results:

  • Adult birds demonstrated true navigation, compensating for displacement to reach traditional wintering areas.
  • Young, first-time migrants continued in their original migratory direction, guided by innate programs.
  • Navigational factors include geomagnetic field, celestial rotation, magnetic intensity, and olfactory input.

Conclusions:

  • Migratory birds exhibit distinct strategies based on experience: experienced birds use true navigation, while naive birds follow genetic directives.
  • First migration experiences contribute to developing true navigation abilities for subsequent journeys.
  • Avian navigation mechanisms share similarities with those of homing pigeons.