... volumes (HVC and Area X) in willow tits (Poecile montanus) , closely related to black-capped chickadees, and in great tits (Parus major) , more closely related to blue tits, from the same area around Oulu, Finland. Both species had larger gonads in spring than during the rest of the year. Great tit males...

..., instructions or products referred to in the content or advertisements. Neurogenesis Songbird HVC Area X Caudomedial nidopallium Motor Behavior Plasticity Stability National Institutes of Health (NIH) 10.13039/100000002 The phenomenon of adult neurogenesis has captivated...

...) and area X. They quantified the area covered by DCX-immunoreactive material in some brain areas, but it is unclear how extensive this quantification was; it appears to have concerned only area X and the surrounding tissue. Furthermore, only the relative expression is reported (with plus and minus signs...

... to what was to be expected from previous research: despite the female bias in song rate, males have a significantly larger HVC and area X song nucleus volumes. Specifically, male HVC was 75% larger than that of females, and male area X was 64% larger than that of females. There was no significant sex...

...(s) disclaim responsibility for any injury to persons or property resulting from any ideas, methods, instructions or products referred to in the content or advertisements. Seasonality Testosterone Song Junco Age HVC Area X Vocal behavior Sonogram Songbird Birds As for all...

... of Nissl-defined song-control nuclei (HVc, Area X, and the robust nucleus of the archistriatum) were reconstructed. In contrast to other cardueline finches, GnRH immunoreactivity was relatively stable across the year, exhibiting only modest seasonal variation. The song control system, on the other hand...