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Abstract
The karyotyping of the endangered takahe (Notornis mantelli) is reported. Sex identification of this species, which exhibits no sexual dimorphism, is determined by counting the number of macrochromosomes and Z sex chromosomes in the metaphase spreads. The second sex chromosome (W) was not identified by Giemsa staining. The karyotype of N. mantelli was compared with the related species F. atra and G. chloropus and only minor differences were observed.
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