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Hi All,
The number of nocturnal flight calls increased considerably this week
compared to the previous weeks of April. Nonetheless, total numbers were
quite light and may be due to a variety of factors including the lower
density of migration and higher flight altitudes in the spring, and a
greater reluctance to fly over the ocean in the early spring. For example,
the strongest nocturnal migration at Cape Forchu to date this spring
occurred when very light surface winds (3-7 km/hr) over the Gulf of Maine on
the night of 28-29 April may have allowed birds to safely make a water
crossing.
The species composition of nocturnal migration well represented the spring
arrivals in the morning counts; Hermit Thrush, Palm Warbler, Yellow-rumped
Warbler, White-throated Sparrow, and Savannah Sparrow.
Total counts for April show some patterns in the timing of migration for
various species. Golden-crowned Kinglets and Song Sparrows peaked from April
11-20, Northern Flicker, Winter Wren, American Robin, and Dark-eyed Junco
from April 21-25, and Palm Warbler and White-throated Sparrow from April
26-30 (and perhaps continuing into May).
The only rare bird for the month at the monitoring station was the recording
of about 9 Snow Bunting on the morning of 22 April.
Detailed tables can be seen at:
http://www.johnfkearney.com/Cape_Forchu_Yarmouth_County_2018.html.
John
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</o:shapelayout></xml><![endif]--></head><body lang=3DEN-CA link=3Dblue =
vlink=3Dpurple><div class=3DWordSection1><p class=3DMsoNormal>Hi =
All,<o:p></o:p></p><p class=3DMsoNormal>The number of nocturnal flight =
calls increased considerably this week compared to the previous weeks of =
April. Nonetheless, total numbers were quite light and may be due to a =
variety of factors including the lower density of migration and higher =
flight altitudes in the spring, and a greater reluctance to fly over the =
ocean in the early spring. For example, the strongest nocturnal =
migration at Cape Forchu to date this spring occurred when very light =
surface winds (3-7 km/hr) over the Gulf of Maine on the night of 28-29 =
April may have allowed birds to safely make a water =
crossing.<o:p></o:p></p><p class=3DMsoNormal>The species composition of =
nocturnal migration well represented the spring arrivals in the morning =
counts; Hermit Thrush, Palm Warbler, Yellow-rumped Warbler, =
White-throated Sparrow, and Savannah Sparrow.<o:p></o:p></p><p =
class=3DMsoNormal>Total counts for April show some patterns in the =
timing of migration for various species. Golden-crowned Kinglets and =
Song Sparrows peaked from April 11-20, Northern Flicker, Winter Wren, =
American Robin, and Dark-eyed Junco from April 21-25, and Palm Warbler =
and White-throated Sparrow from April 26-30 (and perhaps continuing into =
May).<o:p></o:p></p><p class=3DMsoNormal>The only rare bird for the =
month at the monitoring station was the recording of about 9 Snow =
Bunting on the morning of 22 April.<o:p></o:p></p><p =
class=3DMsoNormal>Detailed tables can be seen at: <a =
href=3D"http://www.johnfkearney.com/Cape_Forchu_Yarmouth_County_2018.html=
">http://www.johnfkearney.com/Cape_Forchu_Yarmouth_County_2018.html</a>.<=
o:p></o:p></p><p class=3DMsoNormal>John<o:p></o:p></p><p =
class=3DMsoNormal><o:p> </o:p></p></div></body></html>
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