[NatureNS] Nocturnal Migration for the 3rd Week of May

From: "John Kearney" <john.kearney@ns.sympatico.ca>
To: <naturens@chebucto.ns.ca>
Date: Sun, 27 May 2018 20:52:18 -0300
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Hi All,

This week's monitoring provided further evidence that more nocturnal spring
migrants arrive to coastal southwest Nova Scotia one to three hours after
civil sunrise than before first light. By civil sunrise on 18 May and 21 May
only 3 to 4 warblers were heard during each of these nights. In contrast, in
the 1 to 3 hours after civil sunrise, up to 19 warblers of 7 species and 27
warblers of 8 species were heard on these dates respectively during the 3
5-minute count periods. Except for Black-throated Green Warbler and
Yellow-rumped Warbler, most of the warbler sounds heard were night flight
calls rather than chip calls or songs. This would indicate that these
warblers were still on the move. The migrating warblers included Blackpoll
Warbler, Magnolia Warbler, Yellow Warbler, American Redstart, Black-throated
Blue Warbler, Blackburnian Warbler, Common Yellowthroat, and Cape May
Warbler.

 

The calls of a few Leach's Storm-Petrels were again captured this week. One
of the best recordings can be heard here
<https://macaulaylibrary.org/asset/101158421?__hstc=60209138.26163b89eae8900
8c9379863263b66ea.1515086808854.1527432631523.1527462797028.197&__hssc=60209
138.1.1527462797028&__hsfp=3003667813> . If you have not heard this bird
before, it is worth a listen!

 

A flock of Common Terns were heard arriving at 2202 hours on 15 May. It was
estimated that there were at least 11 birds, perhaps up to 30.

 

A chattering Baltimore Oriole was heard on the morning of 21 May.

 

A rare bird of the week included a singing Field Sparrow. The bird was heard
at a distance throughout the morning. One recording can be heard here
<https://macaulaylibrary.org/asset/102034761?__hstc=60209138.26163b89eae8900
8c9379863263b66ea.1515086808854.1527462797028.1527463076397.198&__hssc=60209
138.5.1527463076397&__hsfp=3003667813> .

 

Further details for the week can be found in the tables on my website
<http://www.johnfkearney.com/Cape_Forchu_Yarmouth_County_2018.html> .

 

John


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vlink=3Dpurple><div class=3DWordSection1><p class=3DMsoNormal><span =
style=3D'font-size:11.0pt;font-family:"Calibri",sans-serif'>Hi =
All,<o:p></o:p></span></p><p class=3DMsoNormal><span =
style=3D'font-size:11.0pt;font-family:"Calibri",sans-serif'>This =
week&#8217;s monitoring provided further evidence that more nocturnal =
spring migrants arrive to coastal southwest Nova Scotia one to three =
hours after civil sunrise than before first light. By civil sunrise on =
18 May and 21 May only 3 to 4 warblers were heard during each of these =
nights. In contrast, in the 1 to 3 hours after civil sunrise, up to 19 =
warblers of 7 species and 27 warblers of 8 species were heard on these =
dates respectively during the 3 5-minute count periods. Except for =
Black-throated Green Warbler and Yellow-rumped Warbler, most of the =
warbler sounds heard were night flight calls rather than chip calls or =
songs. This would indicate that these warblers were still on the move. =
The migrating warblers included Blackpoll Warbler, Magnolia Warbler, =
Yellow Warbler, American Redstart, Black-throated Blue Warbler, =
Blackburnian Warbler, Common Yellowthroat, and Cape May =
Warbler.<o:p></o:p></span></p><p class=3DMsoNormal><span =
style=3D'font-size:11.0pt;font-family:"Calibri",sans-serif'><o:p>&nbsp;</=
o:p></span></p><p class=3DMsoNormal><span =
style=3D'font-size:11.0pt;font-family:"Calibri",sans-serif'>The calls of =
a few Leach&#8217;s Storm-Petrels were again captured this week. One of =
the best recordings can be heard <a =
href=3D"https://macaulaylibrary.org/asset/101158421?__hstc=3D60209138.261=
63b89eae89008c9379863263b66ea.1515086808854.1527432631523.1527462797028.1=
97&amp;__hssc=3D60209138.1.1527462797028&amp;__hsfp=3D3003667813">here</a=
>. If you have not heard this bird before, it is worth a =
listen!<o:p></o:p></span></p><p class=3DMsoNormal><span =
style=3D'font-size:11.0pt;font-family:"Calibri",sans-serif'><o:p>&nbsp;</=
o:p></span></p><p class=3DMsoNormal><span =
style=3D'font-size:11.0pt;font-family:"Calibri",sans-serif'>A flock of =
Common Terns were heard arriving at 2202 hours on 15 May. It was =
estimated that there were at least 11 birds, perhaps up to =
30.<o:p></o:p></span></p><p class=3DMsoNormal><span =
style=3D'font-size:11.0pt;font-family:"Calibri",sans-serif'><o:p>&nbsp;</=
o:p></span></p><p class=3DMsoNormal><span =
style=3D'font-size:11.0pt;font-family:"Calibri",sans-serif'>A chattering =
Baltimore Oriole was heard on the morning of 21 =
May.<o:p></o:p></span></p><p class=3DMsoNormal><span =
style=3D'font-size:11.0pt;font-family:"Calibri",sans-serif'><o:p>&nbsp;</=
o:p></span></p><p class=3DM