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Hi Nancy, James, and all,
These are interesting observations. We are in the midst of the peak =
migration of Swainson=E2=80=99s Thrushes right now. Their night flight =
call is almost identical to a Spring Peeper. Since Swainson=E2=80=99s =
Thrush migrate quite high, we generally hear them just as they are =
gaining altitude or coming down. The spectrogram of the Spring Peeper =
and Swainson=E2=80=99s Thrush are almost identical as well except that =
the Swainson=E2=80=99s Thrush call has some modulation which gives it =
more of a spooky quality.
James may be hearing some combination of Swainson=E2=80=99s Thrushes =
calls: the peeper-like flight call, and the two ground calls, one is a =
low =E2=80=9Cwhit=E2=80=9D or a =E2=80=9Cwhit-burr=E2=80=9D, the other =
is a high descending =E2=80=9Cseer=E2=80=9D note.
John
=20
From: naturens-owner@chebucto.ns.ca =
[mailto:naturens-owner@chebucto.ns.ca] On Behalf Of nancy dowd
Sent: September-18-17 09:25
To: naturens@chebucto.ns.ca
Subject: Re: [NatureNS] Re: Mystery Birds
=20
Lots of isolated Peepers calling here at night. I often think they are =
birds before clueing in.=20
=20
Nancy
E Dalhousie, Kings Co.=20
Sent from my iPad
On Sep 18, 2017, at 8:25 AM, James Hirtle <jrhbirder@hotmail.com =
<mailto:jrhbirder@hotmail.com> > wrote:
Maybe thrushes communicating? =20
=20
Sincerely,
=20
James
=20
_____ =20
From: naturens-owner@chebucto.ns.ca =
<mailto:naturens-owner@chebucto.ns.ca> <naturens-owner@chebucto.ns.ca =
<mailto:naturens-owner@chebucto.ns.ca> > on behalf of James Hirtle =
<jrhbirder@hotmail.com <mailto:jrhbirder@hotmail.com> >
Sent: September 18, 2017 2:48 AM
To: Naturens Naturens
Subject: [NatureNS] Mystery Birds=20
=20
It is now 23:40 as I write this. I was just outside in the yard and =
could hear a weeert type of noise. Something like the diving of a bird =
maybe. This was followed by a whistle type noise from a bird. Off to =
the right there was a corresponding whistle type call. I would hear the =
diving noise again and then a whistle type call and a responding call =
from further away. There then would be a response from a third bird. =
This sequence of events kept occuring with sometimes the whistle =
sounding far away and other times very close to me. Do common =
nighthawks have a whistle type bird call? I've heard their call, but =
this is the only thing I can think of that might be making this type of =
noise. I know the penting call of the American woodcock so it defintely =
was not that. I'm baffled as this is the first time I've heard this on =
the basis of all of the night calls that I've listened to in respects to =
birds. =20
=20
James R. Hirtle
LaHave
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class=3DWordSection1><p class=3DMsoNormal><span =
style=3D'mso-fareast-language:EN-US'>Hi Nancy, James, and =
all,<o:p></o:p></span></p><p class=3DMsoNormal><span =
style=3D'mso-fareast-language:EN-US'>These are interesting observations. =
We are in the midst of the peak migration of Swainson=E2=80=99s Thrushes =
right now. Their night flight call is almost identical to a Spring =
Peeper. Since Swainson=E2=80=99s Thrush migrate quite high, we generally =
hear them just as they are gaining altitude or coming down. The =
spectrogram of the Spring Peeper and Swainson=E2=80=99s Thrush are =
almost identical as well except that the Swainson=E2=80=99s Thrush call =
has some modulation which gives it more of a spooky =
quality.<o:p></o:p></span></p><p class=3DMsoNormal><span =
style=3D'mso-fareast-language:EN-US'>James may be hearing some =
combination of Swainson=E2=80=99s Thrushes calls: the peeper-like flight =
call, and the two ground calls, one is a low =E2=80=9Cwhit=E2=80=9D or a =
=E2=80=9Cwhit-burr=E2=80=9D, the other is a high descending =
=E2=80=9Cseer=E2=80=9D note.<o:p></o:p></span></p><p =
class=3DMsoNormal><span =
style=3D'mso-fareast-language:EN-US'>John<o:p></o:p></span></p><p =
class=3DMsoNormal><span =
style=3D'mso-fareast-language:EN-US'><o:p> </o:p></span></p><div><di=
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0cm 0cm'><p class=3DMsoNormal><b><span =
lang=3DEN-US>From:</span></b><