[CT Birds] - Ceruleans vs BTBs

Justin Lawson justindlawson at gmail.com
Mon Jun 12 10:42:12 EDT 2017


Too add to this in Douglas SF in Massachusetts we had a bird that sounded
like a Cerulean as well. I recorded audio and then photographed the bird.
he came in when we olayed Cerulean.



On Mon, Jun 12, 2017 at 10:39 AM Angela Dimmitt via CTBirds <
ctbirds at lists.ctbirding.org> wrote:

> Jack and Kevin's comments below have got me thinking:  in past Junes, I
> have done the SBC in Riverton on both sides of the Farmington river, the
> American Legion and People's State Forests, and most years I have heard but
> not seen Cerulean warblers along the western side of the river, high in the
> trees, habitat very similar to River Road Kent.  In People's SF, one of the
> most common birds is the Black-throated Blue and I have heard several
> different "accents".  But I have always felt sure of my calls on the
> Ceruleans along the river, clear and sweet.  On June 25, another good
> birder with me, we shall try harder to see the bird as well!
> Angela Dimmitt
> New Milford
>
>
> -----Original Message-----
> From: ctbirds-request <ctbirds-request at lists.ctbirding.org>
> To: ctbirds <ctbirds at lists.ctbirding.org>
> Sent: Mon, Jun 12, 2017 10:03 am
> Subject: CTBirds Digest, Vol 3758, Issue 1
>
> Today's Topics:
>
>    4. "Cerulean-Type" Black-throated Blue Warbler songs (Jack Swatt)
>    5. Re: "Cerulean-Type" Black-throated Blue Warbler songs
>       (Kevin Finnan)
>
>
>
>
>
>
> Message: 5
> Date: Sun, 11 Jun 2017 20:57:27 -0500
> From: Kevin Finnan <kfinnan at aol.com>
> To: Jack Swatt <jswattbirds at snet.net>
> Cc: ctbirds at lists.ctbirding.org
> Subject: Re: [CT Birds] "Cerulean-Type" Black-throated Blue Warbler
>         songs
> Message-ID: <D3D0C412-5349-472E-8C05-E9C63E4ABA58 at aol.com>
> Content-Type: text/plain; charset=us-ascii
>
> Hi Jack, I have noticed the same thing at two locations in Goshen. You
> think you are hearing a Cerulean but it turns out to be a Black-throated
> Blue. In both cases, the habitat is classic Black-throated Blue and there
> never have been Ceruleans there, at least, as far as I know.
>
> Best regards,
>
> Kevin
>
> Sent from my iPhone
>
> > On Jun 11, 2017, at 8:12 PM, Jack Swatt via CTBirds <
> ctbirds at lists.ctbirding.org> wrote:
> >
> >   I do a lot of birding in New Hampshire and have had the same
> experience as Don Morgan has had with the alternate song of the
> Black-throated Blue Warbler that sounds almost exactly like the Cerulean
> Warbler song.  It seems lately almost all the BT Blues I hear up there are
> singing this alternate song.  It's become familiar to northern birders, but
> frequently gets misidentified as Cerulean Warblers by people not familiar
> with this song, as I did when I first heard it.  Just as Don had mentioned,
> the BT Blues singing this alternate song respond to playback of Cerulean
> warbler song and not to BT Blue playbacks.  It has generated several
> discussions on the NH Birds list-serve about visually verifying any
> Cerulean Warbler observations, especially since their decline has made them
> very rare sightings in the state of NH
> > https://groups.google.com/forum/#!topic/nhbirds/OJ4Poc06C6w
> > While this song has been reported in NH, VT and MA, Don's report is the
> first one I've heard of in CT.  I'm not sure if this is a goegraphically
> local song to New England, but I haven't heard of any reports outside the
> area (granted, I didn't do an extensive search of McCauley or Xeno-canto).
> As mentioned before, in the northern states Cerulean Warbler has become
> quite rare, but in MA and CT their ranges overlap.  I would suggest
> visually confirming any Cerulean Warbler identification based on song,
> especially in the northern hills where the overlap occurs.  This should be
> especially considered when submitting sightings into eBird where the data
> can be used scientifically to monitor population trends.
> > If anyone can't open Don's recording, I also have one on an eBird
> checklist:
> > http://ebird.org/ebird/nh/edit/checklist?subID=S30346654
> > Jack Swatt
> > Wolcott
> >
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> **
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-- 
Justin Lawson
Worcester, MA



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