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I see a lot of Yellow-rumped Warblers (YRWA) have been pulling out lately.=
Has their even been any studies done on the successfulness of the species =
that only partial migrate? So many YRWA migrate I don=92t know if is consid=
ered a partial migrant or not. I would guess about 2% give or take of the c=
oastal YRWA from Halifax to Cape Sable stay along with a few stragglers els=
ewhere. It would be interesting to know how many actually stay and if the o=
nes that over-winter are mostly ours or did they came from further north or=
the interior. What percentage survives compared to what percentage survive=
and return of the ones that migrate?
And ditto for other partial migrates. How many Song Sparrow over-winter? 10=
%? Robbins 2%? Black-capped Chickadees, I hesitate to guess 50%?
John, or anyone else that wants to weigh in, I know most of the birds are o=
utgoing. Were those Indigo Bunting likely incoming? Or overshoots heading b=
ack?
Keith
Sent from Mail<https://go.microsoft.com/fwlink/?LinkId=3D550986> for Window=
s 10
From: John Kearney<mailto:john.kearney@ns.sympatico.ca>
Sent: Tuesday, October 17, 2017 3:21 PM
To: naturens@chebucto.ns.ca<mailto:naturens@chebucto.ns.ca>
Subject: [NatureNS] Nocturnal migration for the 1st Week of October
Hi All,
Nocturnal migration was down again during the 1st week of October at the tw=
o Yarmouth County monitoring sites. Details can be found at these two links=
:
Carleton: http://johnfkearney.com/Carleton_Yarmouth_County_2017.html
Cape Forchu: http://johnfkearney.com/Cape_Forchu_Yarmouth_County_2017.html
The low numbers at both sites suggest that birds are beginning to cross the=
Bay of Fundy rather than make a longer journey across the Gulf of Maine to=
avoid weather conditions such as stronger winds.
Rare or uncommon birds for the week included Indigo Buntings, Field Sparrow=
, and Clay-colored Sparrow.
John
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<div class=3D"WordSection1">
<p class=3D"MsoNormal">I see a lot of Yellow-rumped Warblers (YRWA) h=
ave been pulling out lately. Has their even been any studies done on the su=
ccessfulness of the species that only partial migrate? So many YRWA migrate=
I don=92t know if is considered a partial
migrant or not. I would guess about 2% give or take of the coastal YRWA fr=
om Halifax to Cape Sable stay along with a few stragglers elsewhere. It wou=
ld be interesting to know how many actually stay and if the ones that over-=
winter are mostly ours or did they
came from further north or the interior. What percentage survives compared=
to what percentage survive and return of the ones that migrate?
</p>
<p class=3D"MsoNormal"><o:p> </o:p></p>
<p class=3D"MsoNormal">And ditto for other partial migrates. How many Song =
Sparrow over-winter? 10%? Robbins 2%? Black-capped Chickadees, I hesitate t=
o guess 50%?</p>
<p class=3D"MsoNormal"><o:p> </o:p></p>
<p class=3D"MsoNormal">John, or anyone else that wants to weigh in, I know =
most of the birds are outgoing. Were those Indigo Bunting likely incoming? =
Or overshoots heading back?</p>
<p class=3D"MsoNormal"><o:p> </o:p></p>
<p class=3D"MsoNormal">Keith</p>
<p class=3D"MsoNormal"><o:p> </o:p></p>
<p class=3D"MsoNormal">Sent from <a href=3D"https://go.microsoft.com/fwlink=
/?LinkId=3D550986">
Mail</a> for Windows 10</p>
<p class=3D"MsoNormal"><o:p> </o:p></p>
<div style=3D"mso-element:para-border-div;border:none;border-top:solid #E1E=
1E1 1.0pt;padding:3.0pt 0in 0in 0in">
<p class=3D"MsoNormal" style=3D"border:none;padding:0in"><b>From: </b><a hr=
ef=3D"mailto:john.kearney@ns.sympatico.ca">John Kearney</a><br>
<b>Sent: </b>Tuesday, October 17, 2017 3:21 PM<br>
<b>To: </b><a href=3D"mailto:naturens@chebucto.ns.ca">naturens@chebucto.ns.=
ca</a><br>
<b>Subject: </b>[NatureNS] Nocturnal migration for the 1st Week of October<=
/p>
</div>
<p class=3D"MsoNormal"><o:p> </o:p></p>
<p class=3D"MsoNormal"><span lang=3D"EN-CA">Hi All,<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-CA">Nocturnal migration was down ag=
ain during the 1<sup>st</sup> week of October at the two Yarmouth County mo=
nitoring sites. Details can be found at these two links:<o:p></o:p></span><=
/p>
<p class=3D"MsoNormal"><span lang=3D"EN-CA"><o:p> </o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"ES-MX">Carleton: <a href=3D"http://joh=
nfkearney.com/Carleton_Yarmouth_County_2017.html">
http://johnfkearney.com/Carleton_Yarmouth_County_2017.html</a><o:p></o:p></=
span></