Can Iberian Water Rail Rallus aquaticus be sexed reliably using simple morphometrics?

@article{Fuertes2010CanIW,
  title={Can Iberian Water Rail Rallus aquaticus be sexed reliably using simple morphometrics?},
  author={Benito Fuertes and Javier Garc{\'i}a and Juan M. Fernandez and Susana Su{\'a}rez‐Seoane and Juan Jos{\'e} Arranz},
  journal={Ringing \& Migration},
  year={2010},
  volume={25},
  pages={42 - 46}
}
In this paper we classified the sex of 39 Iberian Water Rails Rallus aquaticus using external morphometric measurements and genetic analysis. Logistic regression and classification tree model techniques (CART) were used to test whether simple morphometric measurements alone could classify sex correctly. For most of these measurements the overlap between sexes was too great to be of value. Bill length was the most relevant variable according to all the statistical analyses for the population… 
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