Sex determination of the Acadian Flycatcher using discriminant analysis

I used five morphometric variables from 114 individuals captured in Arkansa s to develop a discriminant model to predict the sex of Acadian Flycatchers (Empidonax virescens). Stepwise discriminant function analyses selected wi ng chord and tail length as the most parsimonious subset of variables for d iscriminating sex. This two-variable model correctly classified 80% of fema les and 97% of males used to develop the model. Validation of the model usi ng 19 individuals from Louisiana and Virginia resulted in 100% correct clas sification of males and females. This model provides criteria for sexing mo nomorphic Acadian Flycatchers during the breeding season and possibly durin g the winter.