Journal of Comparative Physiology A

, Volume 173, Issue 2, pp 193–207 | Cite as

Spatial memory in a food storing corvid

I. Near tall landmarks are primarily used
  • A. T. D. Bennett
Original Articles

Abstract

This work suggests how food storing corvids use spatial memory to relocate caches, and how they can do this after some landmarks surrounding caches have become hidden due to leaf fall, snow fall or plant growth. Experiments involved training European jays (Garrulus glandarius) to find buried food, the location of which was specified by an array of 12 landmarks. Tests were then performed with the array rotated, or with certain landmarks removed from the array. The main findings were: (1) birds primarily remembered the position of the goal using the near tall landmarks (15–30 cm from the goal and 20 cm high); (2) birds obtained a sense of direction both from the landmark array and something external to the array; (3) birds did not use smell or marks in the surface of the ground to find the goal. Memory of near tall landmarks is likely to be functional for these birds since (a) nearer landmarks provide a more accurate fix, and (b) taller landmarks are less likely to be completely obscured by snow fall, leaf fall or intervening vegetation. The work also demonstrates the use of G.I.S. software for the analysis and representation of animal search patterns.

Key words

Spatial memory Landmarks Food storing Corvids Garrulus glandarius 

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Copyright information

© Springer-Verlag 1993

Authors and Affiliations

  • A. T. D. Bennett
    • 1
  1. 1.Laboratoire de Biologie Animale et Cellulaire, Université Libre de BruxellesBruxellesBelgium
  2. 2.Dept. of Pure MathematicsUniversity of AdelaideAdelaideAustralia

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