Category:Avian Reproduction

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Avian Reproductive System Anatomy and Physiology

Key Words:

  • Altricial: newly born young are relatively immobile, have closed eyes, lack down, and must be cared for by the adults. Altricial young are born helpless and require care for a comparatively long time.
  • Precocial: young have open eyes, have down, large brains and are immediately mobile and somewhat able to defend themselves against predators.