[NatureNS] Nocturnal Migration This Week

From: "John Kearney" <john.kearney@ns.sympatico.ca>
To: <naturens@chebucto.ns.ca>
Date: Sun, 19 Aug 2012 22:29:28 -0300
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n Warbler &amp;#8211; 3&lt;o:p&gt;&lt;/o:p&gt
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There was nocturnal movement throughout the week with almost 200 more night
flight calls this week than the week before. In total, 872 flight calls were
recorded this week with the largest number on the night of August 14-15 when
326 night flight calls were recorded. Again most of the nocturnal flight was
of warblers (93%). The American Redstart was the most common of the
identifiable warblers composing 15% of all warblers. Last week this species
accounted for 29% of all warblers. Thus other species were more numerous
this week, for example, Northern Parula, Magnolia Warbler, Black-throated
Green Warbler, Ovenbird, Northern Waterthrush, and Canada Warbler. There
were some less common birds this week too, in particular what I believe to
be Indigo Bunting (1 night) and Vesper Sparrow (2 nights). The increase in
insect noise made identification of species even more difficult than normal
and thus there are probably more in the unidentifed categories.

The summary of night flight calls from the night of August 10 to the morning
of August 17 is as follows:

 

Least Sandpiper - 3

Veery - 4

Swainson's Thrush - 17

Tennessee Warbler- 3

Nashville Warbler - 15

Northern Parula - 30

Yellow Warbler/Blackpoll Warbler - 22

(These are hard to distinguish; I believe that most were Yellow Warblers)

Chestnut-sided Warbler - 13

Magnolia Warbler - 62

Cape May Warbler - 23

Black-throated Blue Warbler - 6

Yellow-rumped Warbler - 25

Black-throated Green Warbler - 39

Blackburnian Warbler - 8

Palm Warbler - 9

Bay-breasted Warbler - 23

Black-and-White Warbler - 26

American Redstart - 125

Other unidentified warblers of the genus Setophaga - 102

(Northern Parula to American Redstart above)

Ovenbird - 43

Northern Waterthrush - 40

Mourning Warbler - 3

Common Yellowthroat - 43

Wilson's Warbler - 4

Canada Warbler - 33

Other unidentified warblers - 114

Chipping Sparrow - 4

Vesper Sparrow - 2

Savannah Sparrow - 3

White-throated Sparrow - 1

Indigo Bunting - 3

Rose-breasted Grosbeak - 2

Unidentified songbirds - 12

Unidentified birds - 10

Total - 872

 

 

 


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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"'>There was =
nocturnal movement throughout the week with almost 200 more night flight =
calls this week than the week before. In total, 872 flight calls were =
recorded this week with the largest number on the night of August 14-15 =
when 326 night flight calls were recorded.</span><span =
style=3D'mso-fareast-language:EN-CA'> <span lang=3DEN-US>Again most of =
the nocturnal flight was of warblers (93%). The American Redstart was =
the most common of the identifiable warblers composing 15% of all =
warblers. Last week this species accounted for 29% of all warblers. Thus =
other species were more numerous this week, for example, Northern =
Parula, Magnolia Warbler, Black-throated Green Warbler, Ovenbird, =
Northern Waterthrush, and Canada Warbler. There were some less common =
birds this week too, in particular what I believe to be Indigo Bunting =
(1 night) and Vesper Sparrow (2 nights). The increase in insect noise =
made identification of species even more difficult than normal and thus =
there are probably more in the unidentifed =
categories.<o:p></o:p></span></span></p><p class=3DMsoNormal><span =
lang=3DEN-US style=3D'mso-fareast-language:EN-CA'>The summary of night =
flight calls from the night of August 10 to the morning of August 17 is =
as follows:<o:p></o:p></span></p><p class=3DMsoNormal><span lang=3DEN-US =
style=3D'mso-fareast-language:EN-CA'><o:p>&nbsp;</o:p></span></p><p =
class=3DMsoNormal><span lang=3DEN-US =
style=3D'mso-fareast-language:EN-CA'>Least Sandpiper &#8211; =
3<o:p></o:p></span></p><p class=3DMsoNormal><span lang=3DEN-US =
style=3D'mso-fareast-language:EN-CA'>Veery &#8211; =
4<o:p></o:p></span></p><p class=3DMsoNormal><span lang=3DEN-US =
style=3D'mso-fareast-language:EN-CA'>Swainson&#8217;s Thrush &#8211; =
17<o:p></o:p></span></p><p class=3DMsoNormal><span lang=3DEN-US =
style=3D'mso-fareast-language:EN-CA'>Tennessee Warbler- =
3<o:p></o:p></span></p><p class=3DMsoNormal><span lang=3DEN-US =
style=3D'mso-fareast-language:EN-CA'>Nashville Warbler &#8211; =
15<o:p></o:p></span></p><p class=3DMsoNormal><span lang=3DEN-US =
style=3D'mso-fareast-language:EN-CA'>Northern Parula &#8211; =
30<o:p></o:p></span></p><p class=3DMsoNormal><span lang=3DEN-US =
style=3D'mso-fareast-language:EN-CA'>Yellow Warbler/Blackpoll Warbler =
&#8211; 22<o:p></o:p></span></p><p class=3DMsoNormal>(These are hard to =
distinguish; I believe that most were Yellow Warblers)<o:p></o:p></p><