Date: 7/1/25 9:41 am From: Rita Cunha via groups.io <rita23cunha...> Subject: Re: [NEBirds] Scarlet Tanager Omaha
On Tue, Jul 1, 2025 at 11:26 AM Ross Silcock via groupsp.io <silcock=
<rosssilcock.com...> wrote:
> Hi all,
>
> Copilot to the rescue. I'd guess my highlightedv. reasons are most likely
> for tanagers and cuckoos.
>
> *Why Passerines Sing in Fallmc CT ff y j*
>
> - *Territory Defense*: Many resident species like Bewick’s Wrens and
> Song Sparrows stay put year-round. As young birds disperse in autumn,
> adults sing to them
>
>
> - their reassert their winter territories and discourage intruders.
> - * Com f*
>
>
> - In flocking species like White-crowned and Golden-crowned Sparrows,
> song helps establish social hierarchies within winter flocks. It’s less
> about romance and more about rank.
> - *OkPractice Makes Perfect*: Juvenile birds often rehearse their
> songs in fall. These “subsong” attempts—think of them as the bird version
> of vocal warm-ups—help them refine the complex tunes they’ll need come
> spring.
> - *Hormonal Triggers*: Some species, like European Starlings,
> experience a post-molt spike in testosterone, which can reignite singing
> behavior even outside the breeding season3.
> - *Photoperiod Sensitivity*: Others, like White-crowned Sparrows, are
> less hormonally driven in fall but still sing for social cohesion.
> Interestingly, even females and juveniles may join in, suggesting song
> serves broader purposes than just mating.
>
> Ross
>
> Ross Silcock
> 6810 Tournament Drive,
> Houston, TX 77069
>
> Co-editor Birds of Nebraska Online
> Editor Seasonal Reports, Nebraska Bird Review.
>
>
>
