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Hi All,
There were still few acoustic indications of nocturnal migration over inland
Yarmouth County (Carleton) this week. However, radar monitoring indicated a
burst of activity on the night of March 31 to April 1. There were 4 hours of
migration on the Portland, ME radar from 2100 to 0100 hours, local time, and
one hour of migration, the first apparent this year, on the Caribou, ME
radar from 2400 to 0100. When the evening started, the soundings of the
weather balloon in Yarmouth (at 2100 hours ADT) showed surface winds from
the southwest at 14 km/hr, from the southwest at 37 km/hr at 100 meters, and
from the west-southwest at 60 km/hr at 1500 meters. These winds would be
favourable for assisting bird flight from Maine and New Brunswick to Nova
Scotia during that night. An examination of eBird sightings of birds that
migrate at night indicated that a strong component of this migration may
have been Song Sparrows. During the week of March 22-31, the average
number of Song Sparrow observed per party hour in Nova Scotia was 10.098. So
far for the week of April 1-7, the average is 14.681. The greatest jump in
the average number of Song Sparrows per party hour was from 8.609 to 25.258
in Pictou County.
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'>There were =
still few acoustic indications of nocturnal migration over inland =
Yarmouth County (Carleton) this week. However, radar monitoring =
indicated a burst of activity on the night of March 31 to April 1. There =
were 4 hours of migration on the Portland, ME radar from 2100 to 0100 =
hours, local time, and one hour of migration, the first apparent this =
year, on the Caribou, ME radar from 2400 to 0100. When the evening =
started, the soundings of the weather balloon in Yarmouth (at 2100 hours =
ADT) showed surface winds from the southwest at 14 km/hr, from the =
southwest at 37 km/hr at 100 meters, and from the west-southwest at 60 =
km/hr at 1500 meters. These winds would be favourable for assisting bird =
flight from Maine and New Brunswick to Nova Scotia during that night. An =
examination of eBird sightings of birds that migrate at night indicated =
that a strong component of this migration may have been Song Sparrows. =
During the week of March 22-31, the =
average number of Song Sparrow observed per party hour in Nova Scotia =
was 10.098. So far for the week of April 1-7, the average is 14.681. The =
greatest jump in the average number of Song Sparrows per party hour was =
from 8.609 to 25.258 in Pictou County.<o:p></o:p></span></p><p =
class=3DMsoNormal><span =
style=3D'font-size:11.0pt;font-family:"Calibri",sans-serif'>John</span><o=
:p></o:p></p></div></body></html>
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