Date: 11/9/17 6:22 pm
From: Olivier Barden <iridosornis...>
Subject: Re: [nfc-l] Catharus thrushes in weird places
Magnus,

The Swiss recording does not sound like a Swainson's Thrush to me, other
than superficially. The spectrographic signature of this call doesn't look
right, either. Could this simply be a Chaffinch? Its quite low-pitched, and
there seems to be a bit of echo. I rarely hear finches at night in North
America--they are for the most part diurnal migrants, like Chaffinch--but
it happens. Compare with this recording: http://www.xeno-canto.org/381677

Regards,

Olivier Barden
Quebec, Canada

On Thu, Nov 9, 2017 at 5:52 AM, Magnus Robb <magnus.robb...> wrote:

> I like the idea of a detector for Catharus thrushes on Scilly! But there
> are two places perhaps better qualified than that. This year saw three
> records in Cork, southwest Ireland and just one on Scilly. But the
> ‘European’ capital for North American vagrants is now Corvo in the Azores
> (actually it’s on the North American side of the mid-Atlantic ridge!). Have
> a look at this list of what was found there this autumn.
>
> http://birdingcorvo2013.blogspot.pt
>
> Talking of Catharus thrushes in unexpected places, I’d be interested to
> know what North Americans make of this. I was surfing around on Xeno-canto
> the other day and I came across this mystery NFC recorded by Thomas Lüthi
> (CC) in his garden in Switzerland in September 2015. To me it sounds like a
> Swainson’s Thrush, and I can’t think of anything European that comes this
> close. How does it sound to people with real experience of this species? I
> only know the NFC of Swainson’s from recordings.
>
> http://www.xeno-canto.org/386520
>
> all the best,
>
> Magnus Robb
>
>
> > On 09 Nov 2017, at 00:08:26, Ted Floyd <tfloyd...> wrote:
> >
> > Sure looks (and sounds) like it to me. I think you can even rule out
> Bicknell's, haha.
> >
> > As you say, it is exciting. This brings up something I've been meaning
> to propose: Given how many Gray-cheeked and Swainson's thrushes are
> actually seen in Britain, it occurs to me that it might be cool to put up a
> detector on the Isles of Scilly pointing out toward the ocean. Especially
> near a light, if there is one. We all know the truism that you can hear
> more Gray-cheeks in an hour than you might see in a lifetime. If that
> applies to thrushes excitedly approaching the British Isles, imagine how
> many thrushes you might detect that way.
> >
> > Best, --Ted
> >
> > Ted Floyd
> > Lafayette, Boulder County, Colorado
> >
> > ===================================
> >
> > Ted Floyd
> > Editor, Birding magazine
> > Managing Editor, North American Birds
> >
> > Website: http://aba.org/birding
> > Twitter: http://twitter.com/BirdingMagazine
> > The ABA Blog: http://blog.aba.org/
> >
> > On Wed, Nov 8, 2017 at 3:09 PM, Debbie Leick <dleick...>
> wrote:
> > Hey folks,
> > Could this be anything other than a Gray-cheeked Thrush? We get many
> Swainson's Thrush but this is so different. Recorded in Victor, MT,
> 9/14/17, ~5:45am. It would be a first for us since we began monitoring in
> 2012. Also, I could not find any records of GCTH west of the Montana
> continental divide in either eBird or the MT Natural Heritage Program
> database. So if it is, a very exciting record for us!
> > Thanks in advance for any guidance!
> > Debbie
> >
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