The consistent presence of paired ovaries in the Kiwi(Apteryx) with some discussion of this condition in other birds

  title={The consistent presence of paired ovaries in the Kiwi(Apteryx) with some discussion of this condition in other birds},
  author={Ferdinand Kinsky},
  journal={Journal f{\"u}r Ornithologie},
  • F. Kinsky
  • Published 1 July 1971
  • Biology
  • Journal für Ornithologie
The ratite order Apterygiformes is the only group of birds in which: 1. Paired ovaries occur consistently without known exceptions. 2. The right ovary (as well as the left) is usually functional. 3. Successful ovulation from the right ovary (as well as the left) is a normal occurrence. 4. If more than one egg is laid during the same season, ovulation occurs alternately from the two ovaries. In addition the following points have also been established: 5. In the North Island Kiwi irregular time… Expand

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