Journal article

Postnatal development of lateralized motor preference in the African grey parrot (Psittacus erithacus).

Snyder P, Bonner J ...see all

Brain and cognition, vol. 46, issue 1-2 (2001) pp. 276-9

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The parrot appears to provide a potentially unique animal model of handedness in humans, but few (if any) observational studies of early postnatal development of postural/motor asymmetries have been published. We studied three African Grey hatchlings, raised without human physical contact, for the first 5 months of life. All three animals failed to show consistent postural and/or motor asymmetries until the end of the 4 postnatal week. These results appear to be comparable to data from prior studies with human infants. Delayed development of lateral motor and/or postural preferences may represent an evolutionarily adaptive strategy for altricial animals.

Author-supplied keywords

  • Animal
  • Animal: physiology
  • Animals
  • Behavior
  • Brain
  • Brain: physiology
  • Choice Behavior
  • Choice Behavior: physiology
  • Functional Laterality
  • Functional Laterality: physiology
  • Motor Skills
  • Motor Skills: physiology
  • Newborn
  • Newborn: physiology
  • Parrots
  • Parrots: physiology
  • Pilot Projects
  • Posture
  • Posture: physiology

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  • P J Snyder

  • J A Bonner

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