Encyclopedia of Evolutionary Psychological Science

Living Edition
| Editors: Todd K. Shackelford, Viviana A. Weekes-Shackelford

Proto-tool

  • Ivo Jacobs
  • Mathias Osvath
Living reference work entry
DOI: https://doi.org/10.1007/978-3-319-16999-6_3156-1

Synonyms

Definition

Proto-tools are functionally analogous to tools but are not held and directly manipulated during or prior to use. (Shumaker et al. 2011)

Introduction

An ancient prophecy once foretold that Aeschylus, the Greek playwright, would die by something falling on his head. He therefore spent the entirety of this cursed day in an open field, far from buildings, trees, and anything else that could fall on his head. Alas, he could not escape his destiny because an eagle dropped a tortoise on his head. If the eagle intended to kill him, this would be classified as tool use. However, it is possible she simply aimed for a nearby rock, or mistook the poet’s shiny bald head for one, in order to crack the tortoise’s hard shell. This would be classified as proto-tool use because the supposed tool (rock or head) was not held or manipulated by the eagle (Shumaker et al. 2011).

Defining tool use is an ongoing challenge that includes distinguishing it from similar...

Keywords

Greek Tragedy Relative Brain Size American Crow Carrion Crow Egyptian Vulture 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.
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References

  1. Cristol, D. A., & Switzer, P. V. (1999). Avian prey-dropping behavior. II. American crows and walnuts. Behavioral Ecology, 10, 220–226. doi:10.1093/beheco/10.3.220.CrossRefGoogle Scholar
  2. Cristol, D. A., Switzer, P. V., Johnson, K. L., & Walke, L. S. (1997). Crows do not use automobiles as nutcrackers: Putting an anecdote to the test. The Auk, 114, 296–298. doi:10.2307/4089172.CrossRefGoogle Scholar
  3. Davenport, J., O’Callaghan, M. J., Davenport, J. L., & Kelly, T. C. (2014). Mussel dropping by carrion and hooded crows: Biomechanical and energetic considerations. Journal of Field Ornithology, 85, 196–205. doi:10.1111/jofo.12060.CrossRefGoogle Scholar
  4. Hunt, G. (2014). Vice-anvil use in nut processing by two Corvus species. New Zealand Journal of Zoology, 41, 68–76. doi:10.1080/03014223.2013.809368.CrossRefGoogle Scholar
  5. Hunt, G., Sakuma, F., & Shibata, Y. (2002). New Caledonian crows drop candle-nuts onto rock from communally-used forks on branches. Emu, 102, 283–290. doi:10.1071/MU01037.CrossRefGoogle Scholar
  6. Lefebvre, L., Nicolakakis, N., & Boire, D. (2002). Tools and brains in birds. Behaviour, 139, 939–973. doi:10.1163/156853902320387918.CrossRefGoogle Scholar
  7. Nihei, Y., & Higuchi, H. (2002). When and where did crows learn to use automobiles as nutcrackers? Tohoku Psychologica Folia, 60, 93–97.Google Scholar
  8. Shettleworth, S. J. (2010). Cognition, evolution and behavior. Oxford: Oxford University Press.Google Scholar
  9. Shumaker, R. W., Walkup, K. R., & Beck, B. B. (2011). Animal tool behavior: The use and manufacture of tools by animals. Baltimore: JHU Press.Google Scholar
  10. Thouless, C., Fanshawe, J., & Bertram, B. (1989). Egyptian Vultures Neophron percnopterus and Ostrich Struthio camelus eggs: The origins of stone-throwing behaviour. Ibis, 131, 9–15. doi:10.1111/j.1474-919X.1989.tb02737.x.CrossRefGoogle Scholar

Copyright information

© Springer International Publishing AG 2016

Authors and Affiliations

  1. 1.Lund UniversityLundSweden

Section editors and affiliations

  • Catherine Salmon
    • 1
  1. 1.University of RedlandsRedlandsUSA