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Hi All,
The radars in Maine showed very light to moderate density of echoes until
the morning of 5 June. After that, there was no sign of nocturnal bird
migration. The records on eBird showed the peak of the very latest of our
spring migrants on the following dates:
1 June, Red-eyed Vireo
3 June, Yellow-bellied Flycatcher
6 June, Alder Flycatcher and Swainson's Thrush
7 June, Mourning Warbler
Calls were sparse in my acoustic recordings at Carleton, Yarmouth County and
are summarized in the table below.
Based on my experience this spring in following the radars in Maine, eBird
records, and my acoustic monitoring stations, I would make the following
working hypothesis:
In the early spring (March to mid-April), birds are entering Nova Scotia
primarily in the Upper Bay of Fundy and the Isthmus of Chignecto. By the end
of April and into mid-May, they cross the Bay of Fundy at increasingly lower
latitudes. By the end of May, some birds may even be flying over the Gulf of
Maine from mid-coast or southern Maine. There may be diurnal migration in
the early spring when birds use a southwesterly flow to arrive on breeding
grounds in a timely fashion while avoiding otherwise wintery flying
conditions. Again, in the very late spring, birds may be flying during the
day and night in a rush to arrive on breeding grounds.
Rare southern birds and the unusual number of shorebirds this spring seem to
be the result of strong cyclonic systems that sweep birds out to sea in the
southeastern United States and bring them to the shores of southern Nova
Scotia, from Yarmouth to Halifax.
As I analyze more of my acoustic recordings in other areas and from previous
years, I may be able to refine these ideas.
Thanks for your interest in reading these reports this spring.
John
Call
Species
Count
Common Yellowthroat
3
American Redstart
1
Unidentified Warbler Genus Setophaga
1
Song Sparrow
1
Total
6
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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'>Hi =
All,<o:p></o:p></span></p><p class=3DMsoNormal><span =
style=3D'font-size:11.0pt;font-family:"Calibri",sans-serif'>The radars =
in Maine showed very light to moderate density of echoes until the =
morning of 5 June. After that, there was no sign of nocturnal bird =
migration. The records on eBird showed the peak of the very latest of =
our spring migrants on the following dates:<o:p></o:p></span></p><p =
class=3DMsoNormal><span =
style=3D'font-size:11.0pt;font-family:"Calibri",sans-serif'>1 June, =
Red-eyed Vireo<o:p></o:p></span></p><p class=3DMsoNormal><span =
style=3D'font-size:11.0pt;font-family:"Calibri",sans-serif'>3 June, =
Yellow-bellied Flycatcher<o:p></o:p></span></p><p =
class=3DMsoNormal><span =
style=3D'font-size:11.0pt;font-family:"Calibri",sans-serif'>6 June, =
Alder Flycatcher and Swainson’s Thrush<o:p></o:p></span></p><p =
class=3DMsoNormal><span =
style=3D'font-size:11.0pt;font-family:"Calibri",sans-serif'>7 June, =
Mourning Warbler<o:p></o:p></span></p><p class=3DMsoNormal><span =
style=3D'font-size:11.0pt;font-family:"Calibri",sans-serif'>Calls were =
sparse in my acoustic recordings at Carleton, Yarmouth County and are =
summarized in the table below.<o:p></o:p></span></p><p =
class=3DMsoNormal><span =
style=3D'font-size:11.0pt;font-family:"Calibri",sans-serif'>Based on my =
experience this spring in following the radars in Maine, eBird records, =
and my acoustic monitoring stations, I would make the following working =
hypothesis:<o:p></o:p></span></p><p class=3DMsoNormal><span =
style=3D'font-size:11.0pt;font-family:"Calibri",sans-serif'>In the early =
spring (March to mid-April), birds are entering Nova Scotia primarily in =
the Upper Bay of Fundy and the Isthmus of Chignecto. By the end of April =
and into mid-May, they cross the Bay of Fundy at increasingly lower =
latitudes. By the end of May, some birds may even be flying over the =
Gulf of Maine from mid-coast or southern Maine. There may be diurnal =
migration in the early spring when birds use a southwesterly flow to =
arrive on breeding grounds in a timely fashion while avoiding otherwise =
wintery flying conditions. Again, in the very late spring, birds may be =
flying during the day and night in a rush to arrive on breeding =
grounds.<o:p></o:p></span></p><p class=3DMsoNormal><span =
style=3D'font-size:11.0pt;font-family:"Calibri",sans-serif'>Rare =
southern birds and the unusual number of shorebirds this spring seem to =
be the result of strong cyclonic systems that sweep birds out to sea in =
the southeastern United States and bring them to the shores of southern =
Nova Scotia, from Yarmouth to Halifax.<o:p></o:p></span></p><p =
class=3DMsoNormal><span =
style=3D'font-size:11.0pt;font-family:"Calibri",sans-serif'>As I analyze =
more of my acoustic recordings in other areas and from previous years, I =
may be able to refine these ideas.<o:p></o:p></span></p><p =
class=3DMsoNormal><span =
style=3D'font-size:11.0pt;font-family:"Calibri",sans-serif'>Thanks for =
your interest in reading these reports this =
spring.<o:p></o:p></span></p><p class=3DMsoNormal><span =
style=3D'font-size:11.0pt;font-family:"Calibri",sans-serif'>John<o:p></o:=
p></span></p><p class=3DMsoNormal><span =
style=3D'font-size:11.0pt;font-family:"Calibri",sans-serif'><o:p> </=
o:p></span></p><table class=3DMsoNormalTable border=3D0 cellspacing=3D0 =
cellpadding=3D0 width=3D319 =
style=3D'width:239.0pt;border-collapse:collapse'><tr =
style=3D'height:15.0pt'><td width=3D255 nowrap valign=3Dbottom =
style=3D'width:191.0pt;padding:0cm 5.4pt 0cm =
5.4pt;height:15.0pt'></td><td width=3D64 nowrap valign=3Dbottom =
style=3D'width:48.0pt;padding:0cm 5.4pt 0cm 5.4pt;height:15.0pt'><p =
class=3DMsoNormal align=3Dcenter style=3D'text-align:center'><span =
style=3D'font-size:11.0pt;font-family:"Calibri",sans-serif;color:black;ms=
o-fareast-language:EN-CA'>Call <o:p></o:p></span></p></td></tr><tr =
style=3D'height:15.75pt'><td width=3D255 nowrap valign=3Dbottom =
style=3D'width:191.0pt;border:none;border-bottom:solid windowtext =
1.0pt;padding:0cm 5.4pt 0cm 5.4pt;height:15.75pt'><p =
class=3DMsoNormal><span =
style=3D'font-size:11.0pt;font-family:"Calibri",sans-serif;color:black;ms=
o-fareast-language:EN-CA'>Species<o:p></o:p></span></p></td><td =
width=3D64 nowrap valign=3Dbottom =
style=3D'width:48.0pt;border:none;border-bottom:solid windowtext =
1.0pt;padding:0cm 5.4pt 0cm 5.4pt;height:15.75pt'><p class=3DMsoNormal =
align=3Dcenter style=3D'text-align:center'><span =
style=3D'font-size:11.0pt;font-family:"Calibri",sans-serif;color:black;ms=
o-fareast-language:EN-CA'>Count<o:p></o:p></span></p></td></tr><tr =
style=3D'height:15.0pt'><td width=3D255 nowrap valign=3Dbottom =
style=3D'width:191.0pt;padding:0cm 5.4pt 0cm 5.4pt;height:15.0pt'><p =
class=3DMsoNormal><span =
style=3D'font-size:11.0pt;font-family:"Calibri",sans-serif;color:black;ms=
o-fareast-language:EN-CA'>Common =
Yellowthroat<o:p></o:p></span></p></td><td width=3D64 nowrap =
valign=3Dbottom style=3D'width:48.0pt;padding:0cm 5.4pt 0cm =
5.4pt;height:15.0pt'><p class=3DMsoNormal align=3Dcenter =
style=3D'text-align:center'><span =
style=3D'font-size:11.0pt;font-family:"Calibri",sans-serif;color:black;ms=
o-fareast-language:EN-CA'>3<o:p></o:p></span></p></td></tr><tr =
style=3D'height:15.0pt'><td width=3D255 nowrap valign=3Dbottom =
style=3D'width:191.0pt;padding:0cm 5.4pt 0cm 5.4pt;height:15.0pt'><p =
class=3DMsoNormal><span =
style=3D'font-size:11.0pt;font-family:"Calibri",sans-serif;color:black;ms=
o-fareast-language:EN-CA'>American =
Redstart<o:p></o:p></span></p></td><td width=3D64 nowrap valign=3Dbottom =
style=3D'width:48.0pt;padding:0cm 5.4pt 0cm 5.4pt;height:15.0pt'><p =
class=3DMsoNormal align=3Dcenter style=3D'text-align:center'><span =
style=3D'font-size:11.0pt;font-family:"Calibri",sans-serif;color:black;ms=
o-fareast-language:EN-CA'>1<o:p></o:p></span></p></td></tr><tr =
style=3D'height:15.0pt'><td width=3D255 nowrap valign=3Dbottom =
style=3D'width:191.0pt;padding:0cm 5.4pt 0cm 5.4pt;height:15.0pt'><p =
class=3DMsoNormal><span =
style=3D'font-size:11.0pt;font-family:"Calibri",sans-serif;color:black;ms=
o-fareast-language:EN-CA'>Unidentified Warbler Genus =
Setophaga<o:p></o:p></span></p></td><td width=3D64 nowrap =
valign=3Dbottom style=3D'width:48.0pt;padding:0cm 5.4pt 0cm =
5.4pt;height:15.0pt'><p class=3DMsoNormal align=3Dcenter =
style=3D'text-align:center'><span =
style=3D'font-size:11.0pt;font-family:"Calibri",sans-serif;color:black;ms=
o-fareast-language:EN-CA'>1<o:p></o:p></span></p></td></tr><tr =
style=3D'height:15.75pt'><td width=3D255 nowrap valign=3Dbottom =
style=3D'width:191.0pt;border:none;border-bottom:solid windowtext =
1.0pt;padding:0cm 5.4pt 0cm 5.4pt;height:15.75pt'><p =
class=3DMsoNormal><span =
style=3D'font-size:11.0pt;font-family:"Calibri",sans-serif;color:black;ms=
o-fareast-language:EN-CA'>Song Sparrow<o:p></o:p></span></p></td><td =
width=3D64 nowrap valign=3Dbottom =
style=3D'width:48.0pt;border:none;border-bottom:solid windowtext =
1.0pt;padding:0cm 5.4pt 0cm 5.4pt;height:15.75pt'><p class=3DMsoNormal =
align=3Dcenter style=3D'text-align:center'><span =
style=3D'font-size:11.0pt;font-family:"Calibri",sans-serif;color:black;ms=
o-fareast-language:EN-CA'>1<o:p></o:p></span></p></td></tr><tr =
style=3D'height:15.0pt'><td width=3D255 nowrap valign=3Dbottom =
style=3D'width:191.0pt;padding:0cm 5.4pt 0cm 5.4pt;height:15.0pt'><p =
class=3DMsoNormal><span =
style=3D'font-size:11.0pt;font-family:"Calibri",sans-serif;color:black;ms=
o-fareast-language:EN-CA'>Total<o:p></o:p></span></p></td><td width=3D64 =
nowrap valign=3Dbottom style=3D'width:48.0pt;padding:0cm 5.4pt 0cm =
5.4pt;height:15.0pt'><p class=3DMsoNormal align=3Dcenter =
style=3D'text-align:center'><span =
style=3D'font-size:11.0pt;font-family:"Calibri",sans-serif;color:black;ms=
o-fareast-language:EN-CA'>6<o:p></o:p></span></p></td></tr></table><p =
class=3DMsoNormal><span =
style=3D'font-size:11.0pt;font-family:"Calibri",sans-serif'><o:p> </=
o:p></span></p><p class=3DMsoNormal><span =
style=3D'font-size:11.0pt;font-family:"Calibri",sans-serif'><o:p> </=
o:p></span></p><p class=3DMsoNormal><span =
style=3D'font-size:11.0pt;font-family:"Calibri",sans-serif'><o:p> </=
o:p></span></p><p =
class=3DMsoNormal><o:p> </o:p></p></div></body></html>
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Index of Subjects