(NO TITLE).

Abstract

A total of 195 experiments were performed during the fall migration under three basic environmental conditions, in all cases with only the overhead sky visible to the bird. First, under clear starlit skies, secondly, under clear starlit skies with the moon visible, and, finally, tests under artificial overcast. The tests under moonlit skies showed a clear tendency for the bird to head either in the direction of the moon or in the direction of the side of the apparatus lighted by the moon, i.e., directly away from the moon. (Author)

Document Details

Document Type
Technical Report
Publication Date
Jan 01, 1962
Accession Number
AD0415112

Entities

People

  • William J. Hamilton Iii

Organizations

  • California Academy of Sciences

Tags

DTIC Thesaurus Topics

  • Atmospheric Condensation
  • Biological Phenomena
  • Cloud Cover
  • Clouds
  • Condensation
  • Ecological And Environmental Phenomena
  • Ecological And Environmental Processes
  • Isothermal Processes
  • Meteorological Phenomena
  • Migration

Readers

  • Circadian Sleep-Wake Regulation and Chronobiology
  • Educational Psychology
  • Vision Science/Vision Psychology/Cognitive Neuroscience.