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Hi All,
It was another very good week for nocturnal migration. The Maine radars
showed signs of migration on 5 out of the 7 nights in the period. The
strength of this nocturnal migration is classified as follows:
15 May - None at Caribou, None at Portland
16 May - None at Caribou, None at Portland
17 May - Light at Caribou, Light at Portland
18 May - Heavy at Caribou, Very Heavy at Portland
19 May - Heavy at Caribou, Moderate at Portland
20 May - Light at Caribou, Moderate at Portland
21 may - Heavy at Caribou, Heavy at Portland
Looking at nocturnal migrants that would be expected to be headed to Nova
Scotia at this time, the pattern that stands out is the arrival of birds
throughout the period of 18-22 May as reported in eBird. The abundance of
warblers increased throughout these last five days of the week. Peak
abundance for the week was 19 May for Black-throated Green Warbler, 20 May
for Magnolia Warbler, 21 May for Common Yellowthroat and Yellow Warbler, and
22 May for Ovenbird and American Redstart.
Among the few warblers flying low enough to be detected by my microphone at
Carleton, Yarmouth County, the most common flight call was that of the
Ovenbird. These do not include night flight songs of Ovenbirds that were
heard throughout the period. These are usually given by local birds on
territory but can be performed by migrating birds as well. A summary of the
night flight calls at Carleton are given in the following table.
John
Estimated
Call
Minimum
Species
Count
Individuals
Ovenbird
7
7
Unidentified Warbler
4
4
Common Yellowthroat
3
3
Northern Parula
3
3
Spotted Sandpiper
9
1
Magnolia Warbler
3
1
Black-throated Green Warbler
1
1
Unidentified Songbird
1
1
Palm Warbler
1
1
Unidentified Warbler Genus Setophaga
1
1
Unknown Bird
1
1
Yellow-rumped Warbler
1
1
Total
35
25
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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'>It was =
another very good week for nocturnal migration. The Maine radars showed =
signs of migration on 5 out of the 7 nights in the period. The strength =
of this nocturnal migration is classified as =
follows:<o:p></o:p></span></p><p class=3DMsoNormal><span =
style=3D'font-size:11.0pt;font-family:"Calibri",sans-serif'>15 May =
– None at Caribou, None at Portland<o:p></o:p></span></p><p =
class=3DMsoNormal><span =
style=3D'font-size:11.0pt;font-family:"Calibri",sans-serif'>16 May =
– None at Caribou, None at Portland<o:p></o:p></span></p><p =
class=3DMsoNormal><span =
style=3D'font-size:11.0pt;font-family:"Calibri",sans-serif'>17 May =
– Light at Caribou, Light at Portland<o:p></o:p></span></p><p =
class=3DMsoNormal><span =
style=3D'font-size:11.0pt;font-family:"Calibri",sans-serif'>18 May =
– Heavy at Caribou, Very Heavy at Portland<o:p></o:p></span></p><p =
class=3DMsoNormal><span =
style=3D'font-size:11.0pt;font-family:"Calibri",sans-serif'>19 May =
– Heavy at Caribou, Moderate at Portland<o:p></o:p></span></p><p =
class=3DMsoNormal><span =
style=3D'font-size:11.0pt;font-family:"Calibri",sans-serif'>20 May =
– Light at Caribou, Moderate at Portland<o:p></o:p></span></p><p =
class=3DMsoNormal><span =
style=3D'font-size:11.0pt;font-family:"Calibri",sans-serif'>21 may =
– Heavy at Caribou, Heavy at Portland<o:p></o:p></span></p><p =
class=3DMsoNormal><span =
style=3D'font-size:11.0pt;font-family:"Calibri",sans-serif'>Looking at =
nocturnal migrants that would be expected to be headed to Nova Scotia at =
this time, the pattern that stands out is the arrival of birds =
throughout the period of 18-22 May as reported in eBird. The abundance =
of warblers increased throughout these last five days of the week. Peak =
abundance for the week was 19 May for Black-throated Green Warbler, 20 =
May for Magnolia Warbler, 21 May for Common Yellowthroat and Yellow =
Warbler, and 22 May for Ovenbird and American =
Redstart.<o:p></o:p></span></p><p class=3DMsoNormal><span =
style=3D'font-size:11.0pt;font-family:"Calibri",sans-serif'>Among the =
few warblers flying low enough to be detected by my microphone at =
Carleton, Yarmouth County, the most common flight call was that of the =
Ovenbird. These do not include night flight songs of Ovenbirds that were =
heard throughout the period. These are usually given by local birds on =
territory but can be performed by migrating birds as well. A summary of =
the night flight calls at Carleton are given in the following =
table.&l