The ecology of tool-use in the woodpecker finch (Cactospiza pallida)

Sabine Tebbich, M Taborsky, B Fessl, M Dvorak

Research output: Contribution to journalArticlepeer-review

100 Citations (Scopus)

Abstract

Insects, mammals and birds are known to use tools, but empirical evidence of the ecological importance of tool-use is scarce. Here, we present the first ecological study of tool-use by a bird species. Woodpecker finches use twigs or cactus spines to pry arthropods out of tree-holes. We compared tool-use during wet and dry seasons in two different vegetation zones: the Arid Zone and the humid Scalesia Zone. In the Scalesia Zone, where food was abundant and easily accessible, woodpecker finches rarely used tools. In contrast, in the Arid Zone, where food was limited and hard to access, they obtained half of their prey using tools during the dry season. Tool-use enabled the birds to reach particularly large and otherwise inaccessible prey hidden in tree-holes. Our data suggest that tool-use in the woodpecker finch has evolved in response to the dry and unpredictable conditions in the coastal zone of the Galapagos Islands.

Original languageEnglish
Pages (from-to)656-664
Number of pages9
JournalEcology Letters
Volume5
Issue number5
DOIs
Publication statusPublished - Sept 2002

Keywords

  • Darwin's finches
  • tool-use
  • Cactospiza pallida
  • WILD CHIMPANZEES
  • DARWIN FINCHES
  • ENERGY CONTENT
  • GALAPAGOS
  • RESPONSES
  • GEOSPIZA
  • BEHAVIOR

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