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Updated: Jul 12, 2026

Operant Conditioning Task to Measure Song Preference in Zebra Finches
Published on: December 26, 2019
Sexual difference in pattern of hormone accumulation in the brain of a songbird
Abstract:
After adult zebra finches (Poephila guttata) received injections of tritiated testosterone, fewer hormone-concentrating cells were found in females than in males in two brain regions involved in song: hyperstriatum ventrale pars caudale and magnocellular nucleus of the anterior neostriatum. In some other regions, no sexual difference was detected. It is, therefore, possible that sex differences in the sensitivity of specific neural populations to hormones underlie the striking anatomical dimorphism observed in neural regions controlling song.
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