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Randy,
For this particular microphone, it is about 150 meters. The area would =
be quite a small portion of the night sky. I have other microphones with =
a reach of about 300 meters. This stronger microphone needs a corded =
power supply so it is more difficult to use in a remote areas. The =
former operates on batteries and can be put anywhere.
John
=20
From: naturens-owner@chebucto.ns.ca =
[mailto:naturens-owner@chebucto.ns.ca] On Behalf Of Randy Lauff
Sent: September-19-14 12:38
To: NatureNS
Subject: Re: [NatureNS] Nocturnal Migration at Amherst for the Week of =
September 8-14, 2014
=20
John,
=20
How far is the reach of your equipment, but in elevation and area? I =
realize "it depends" is going to be the answer, so how about for =
Savannah Sparrows (or any other bird you like) under ideal recording =
conditions.
=20
Randy
_________________________________
RF Lauff
Way in the boonies of
Antigonish County, NS.
=20
On 19 September 2014 12:19, John Kearney <john.kearney@ns.sympatico.ca> =
wrote:
Hi All,
Nocturnal migration over Amherst was steady this week and facilitated by
good weather. Even when there were showers during the night, migration
continued before, after, and sometimes during the rain. Total number of
night flight calls was 1,210 almost the same as the total number the =
week
before (1, 231). There was, nonetheless, a change in the composition of =
the
flight from the previous week. In both weeks, warblers constituted 67% =
of
the flight calls recorded. Thrush calls decreased from 24% of the total =
to
15% while sparrows increased from 4% to 13% of the total.
The most common call recorded was again Swainson's Thrush with 167.
Blackpoll Warbler followed with 153 calls and Magnolia Warbler with 134
calls. Common Yellowthroats appear lower than normal for this time of =
year
at 68 calls. Chestnut-sided Warblers continue their unusually high =
numbers
with 44 calls recorded this week. An acoustic monitoring network in New =
York
State has informed me that they too seem to have unusually high numbers =
of
Chestnut-sided Warblers.
The increase in sparrow calls was largely due to a doubling of Savannah
Sparrow calls over the previous week. Swainson's Thrushes declined from =
284
to 167 calls between last week and the current week. Hermit Thrushes
increased only slightly. Their peak normally occurs in the last week of
September and first week of October.
Rare or uncommon birds recorded this week were Vesper Sparrow (1) and
Blue-winged/Golden-winged Warbler (1). This is the third week in a row =
that
I have seen the spectrogram of this species complex in my recordings. I =
have
not recorded it before this year so this appears to be exceptional. This
could be due to the fact that my recording equipment is closer than it =
has
ever been to the mainland of Canada, or that there is an increase in =
this
species this year (which appears to be the case for daytime sightings), =
or
that I am becoming more confident in my identification of species that =
are
both rare and hard to distinguish with certainty.
A summary list for the week is below.
John
Species/ Calls
Swainson's Thrush 167
Blackpoll Warbler 153
Magnolia Warbler 134
Savannah Sparrow 97
Common Yellowthroat 68
Unidentified warbler of the genus Setophaga 65
Unidentified warbler 51
Black-throated Green Warbler 48
Chestnut-sided Warbler 44
Ovenbird 44
Bay-breasted Warbler 39
White-throated Sparrow 32
Unidentified songbird 27
Yellow-rumped Warbler 27
Northern Parula 22
American Redstart 19
Black-and-White Warbler 18
Unidentified sparrow 16
Hermit Thrush 16
Mourning Warbler 16
Blackburnian Warbler 12
Nashville Warbler 12
Unidentifed warbler of the genus Oreothlypis 12
Lincoln's/Swamp Sparrow 10
Killdeer 8
Canada Goose 7
American Woodcock 5
Cape May Warbler 5
Palm Warbler 4
Tennessee Warbler 4
Black-throated Blue Warbler 3
Chipping Sparrow 3
Greater Yellowlegs 3
Rose-breasted Grosbeak 3
Veery 3
Wilson's Warbler 3
Canada Warbler 2
Golden-crowned Kinglet 2
Unidentified bird 2
Bobolink 1
Golden-winged/Blue-winged Warbler 1
Unidentified thrush 1
Vesper Sparrow 1
Total 1,210
=20
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</o:shapelayout></xml><![endif]--></head><body lang=3DEN-CA link=3Dblue =
vlink=3Dpurple><div class=3DWordSection1><p class=3DMsoNormal><span =
style=3D'font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497=
D'>Randy,<o:p></o:p></span></p><p class=3DMsoNormal><span =
style=3D'font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497=
D'>For this particular microphone, it is about 150 meters. The area =
would be quite a small portion of the night sky. I have other =
microphones with a reach of about 300 meters. This stronger microphone =
needs a corded power supply so it is more difficult to use in a remote =
areas. The former operates on batteries and can be put =
anywhere.<o:p></o:p></span></p><p class=3DMsoNormal><span =
style=3D'font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497=
D'>John<o:p></o:p></span></p><p class=3DMsoNormal><span =
style=3D'font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497=
D'><o:p> </o:p></span></p><p class=3DMsoNormal><b><span =
lang=3DEN-US =
style=3D'font-size:10.0pt;font-family:"Tahoma","sans-serif"'>From:</span>=
</b><span lang=3DEN-US =
style=3D'font-size:10.0pt;font-family:"Tahoma","sans-serif"'> =
naturens-owner@chebucto.ns.ca [mailto:naturens-owner@chebucto.ns.ca] =
<b>On Behalf Of </b>Randy Lauff<br><b>Sent:</b> September-19-14 =
12:38<br><b>To:</b> NatureNS<br><b>Subject:</b> Re: [NatureNS] Nocturnal =
Migration at Amherst for the Week of September 8-14, =
2014<o:p></o:p></span></p><p =
class=3DMsoNormal><o:p> </o:p></p><div><p =
class=3DMsoNormal>John,<o:p></o:p></p><div><p =
class=3DMsoNormal><o:p> </o:p></p></div><div><p =
class=3DMsoNormal>How far is the reach of your equipment, but in =
elevation and area? I realize "it depends" is going to be the =
answer, so how about for Savannah Sparrows (or any other bird you like) =
under ideal recording conditions.<o:p></o:p></p></div><div><p =
class=3DMsoNormal><o:p> </o:p></p></div><div><p =
class=3DMsoNormal>Randy<o:p></o:p></p></div></div><div><p =
class=3DMsoNormal><br clear=3Dall><o:p></o:p></p><div><p =
class=3DMsoNormal>_________________________________<br>RF Lauff<br>Way =
in the boonies of<br>Antigonish County, NS.<o:p></o:p></p></div><p =
class=3DMsoNormal><o:p> </o:p></p><div><p class=3DMsoNormal>On 19 =
September 2014 12:19, John Kearney <<a =
href=3D"mailto:john.kearney@ns.sympatico.ca" =
target=3D"_blank">john.kearney@ns.sympatico.ca</a>> =
wrote:<o:p></o:p></p><p class=3DMsoNormal =
style=3D'margin-bottom:12.0pt'>Hi All,<br>Nocturnal migration over =
Amherst was steady this week and facilitated by<br>good weather. Even =
when there were showers during the night, migration<br>continued before, =
after, and sometimes during the rain. Total number of<br>night flight =
calls was 1,210 almost the same as the total number the week<br>before =
(1, 231). There was, nonetheless, a change in the composition of =
the<br>flight from the previous week. In both weeks, warblers =
constituted 67% of<br>the flight calls recorded. Thrush calls decreased =
from 24% of the total to<br>15% while sparrows increased from 4% to 13% =
of the total.<br>The most common call recorded was again Swainson's =
Thrush with 167.<br>Blackpoll Warbler followed with 153 calls and =
Magnolia Warbler with 134<br>calls. Common Yellowthroats appear lower =
than normal for this time of year<br>at 68 calls. Chestnut-sided =
Warblers continue their unusually high numbers<br>with 44 calls recorded =
this week. An acoustic monitoring network in New York<br>State has =
informed me that they too seem to have unusually high numbers =
of<br>Chestnut-sided Warblers.<br>The increase in sparrow calls was =
largely due to a doubling of Savannah<br>Sparrow calls over the previous =
week. Swainson's Thrushes declined from 284<br>to 167 calls between last =
week and the current week. Hermit Thrushes<br>increased only slightly. =
Their peak normally occurs in the last week of<br>September and first =
week of October.<br>Rare or uncommon birds recorded this week were =
Vesper Sparrow (1) and<br>Blue-winged/Golden-winged Warbler (1). This is =
the third week in a row that<br>I have seen the spectrogram of this =
species complex in my recordings. I have<br>not recorded it before this =
year so this appears to be exceptional. This<br>could be due to the fact =
that my recording equipment is closer than it has<br>ever been to the =
mainland of Canada, or that there is an increase in this<br>species this =
year (which appears to be the case for daytime sightings), or<br>that I =
am becoming more confident in my identification of species that =
are<br>both rare and hard to distinguish with certainty.<br>A summary =
list for the week is below.<br>John<br><br>Species/ =
Calls<br>Swainson's Thrush =
167<br>Blackpoll Warbler 153<br>Magnolia =
Warbler 134<br>Savannah Sparrow =
97<br>Common Yellowthroat =
68<br>Unidentified warbler of the genus Setophaga =
65<br>Unidentified warbler 51<br>Black-throated Green =
Warbler 48<br>Chestnut-sided Warbler =
44<br>Ovenbird 44<br>Bay-breasted =
Warbler 39<br>White-throated Sparrow =
32<br>Unidentified songbird 27<br>Yellow-rumped =
Warbler 27<br>Northern Parula 22<br>American Redstart =
19<br>Black-and-White Warbler 18<br>Unidentified =
sparrow 16<br>Hermit Thrush 16<br>Mourning =
Warbler 16<br>Blackburnian Warbler =
12<br>Nashville Warbler =
12<br>Unidentifed warbler of the genus Oreothlypis =
12<br>Lincoln's/Swamp Sparrow 10<br>Killdeer =
8<br>Canada Goose 7<br>American Woodcock =
5<br>Cape May Warbler 5<br>Palm =
Warbler 4<br>Tennessee Warbler =
4<br>Black-throated Blue Warbler 3<br>Chipping =
Sparrow 3<br>Greater Yellowlegs =
3<br>Rose-breasted Grosbeak 3<br>Veery =
3<br>Wilson's Warbler 3<br>Canada =
Warbler 2<br>Golden-crowned Kinglet 2<br>Unidentified =
bird 2<br>Bobolink =
1<br>Golden-winged/Blue-winged Warbler =
1<br>Unidentified thrush 1<br>Vesper =
Sparrow 1<br>Total =
1,210<br><br><o:p></o:p></p></div><p =
class=3DMsoNormal><o:p> </o:p></p></div></div></body></html>
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