Date: 11/22/25 7:53 pm From: Alexander Henry via groups.io <awhenry...> Subject: Re: [EBB-Sightings] Black-throated Green Warbler at Estuary Park on Alameda Island
My take is that even though it’s pretty bright, it’s probably either a very
mature female (ASY female) or a male hatched in summer 2024 or 2025 (SY or
HY male). But I’m sort of just guessing here. Makes you you think how nice
a singing adult male in late spring and early summer in the East is!
On Saturday, November 22, 2025, Teale Fristoe via groups.io <fristoe=
<gmail.com...> wrote:
> Yesterday, Alex Henry tracked down a Townsend's Warbler like chip at
> Estuary Park on Alameda Island, only to discover the bird was actually a
> very nice Black-throated Green Warbler. Congrats on the fantastic find!
>
> The bird continued today, sometimes showing very well, sometimes
> disappearing for long periods of time.
>
> The main reason I want to post about this bird is the confusing location.
> There is actually another park east of this one on the mainland called
> Estuary Park, which has an existing hotspot. This is NOT the hotspot you
> should be using. I've created a new Estuary Park/Challenger Field,
> Alameda hotspot <https://ebird.org/hotspot/L55359419> you should use.
> It's also fine to use the established Mosley Ave Marsh hotspot if you cover
> that area in addition to the park looking for the warbler. And remember,
> it's always preferable to use a hotspot over a personal location if an
> appropriate hotspot exists.
>
> Again, congrats to Alex on the great find and good luck to everyone who
> chases this beautiful bird!
>
> Teale Fristoe
> Berkeley
>
