Differential Memory for Different Cache Sites by Clark's Nutcrackers (Nucifraga columbiana)

Alan C. Kamil, Russell P. Balda

Research output: Contribution to journalArticlepeer-review

35 Scopus citations


When Clark's nutcrackers (Nucifraga columbiana) recover their caches, accuracy declines as recovery proceeds. Two experiments investigated this phenomenon. The results of Experiment 1 demonstrated that this effect is eliminated when the birds are forced to recover their caches in random order over several recovery sessions. This is consistent with the hypothesis that the decline in recovery accuracy is due to differential memory for different cache sites, with better remembered sites recovered first. During Experiment 2, nutcrackers were forced to use the same sites during successive cache recovery tests. There was no correlation between the orders of recovery in the 2 tests. This indicates that order of cache recovery is not determined by inherent physical characteristics of cache sites.

Original languageEnglish (US)
Pages (from-to)162-168
Number of pages7
JournalJournal of Experimental Psychology: Animal Behavior Processes
Issue number2
StatePublished - Apr 1990
Externally publishedYes

ASJC Scopus subject areas

  • Ecology, Evolution, Behavior and Systematics
  • Experimental and Cognitive Psychology


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