The Avian Egg: Incubation Time and Water Loss

  title={The Avian Egg: Incubation Time and Water Loss},
  author={Hermann Rahn and Amos Ar},
  journal={The Condor},
The large difference in incubation time among bird eggs, ranging from a minimum of 11 days to nearly 90, has aroused man's interest since antiquity. [] Key Result On the basis of water vapor conductivity measurements of the egg shell previously presented (Ar et al. 1974), the daily weight losses of eggs during natural incubation reported by Drent (1970), and the reported incubation periods, one is now able to derive new relationships which apply to eggs in general.

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