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If you look carefully at the maps for 2009 and for 2010, so far, there is not really a significant difference as far as Canada is concerned.
Last year at this time, there had been 2 reports in Canada (s. Ontario), while this year there have been 4 reports. Is this significant? I don't think so. As far as NS is concerned, there are no reports yet for 2010 while in 2009 the first reports came on April 20, 22, 22, 23. April 20 is only 11 days away.
Most migrating birds time their migration according to the diurnal cycle (the length of the day) so just because we are experiencing late spring-like weather here does not necessarily mean birds will arrive here early. Those outliers which do arrive "early", like the Ruby-crowned Kinglet that Suzanne and I saw and heard last Tuesday, may be more readily noticed since it was singing in the warm sunshine.
Overall, I am sceptical that our unseasonably warm weather here has any effect on the arrival timing of migrating birds.
Cheers,
Bob McDonald
Halifax
----- Original Message -----
From: Hans Toom
To: naturens@chebucto.ns.ca
Sent: Friday, April 09, 2010 12:22 PM
Subject: Re: [NatureNS] earliest hummingbird
Hi all,
The Ruby-throated Hummingbirds are about 1400 kilometres further north this year than last year. Last year they were crossing the North Carolina border in early April while this year they are probably in Maine already.
Hans
----- Original Message -----
From: Angela Joudrey*
To: naturens@chebucto.ns.ca
Sent: Friday, April 09, 2010 11:54 AM
Subject: [NatureNS] earliest hummingbird
Hello all.
I was wondering what the earliest date was that you first noticed a hummingbird ( from last spring ).
Unless I read the map wrong on hummingbird.net, it looks like they are later this year? ( I was showing a student the web page and it is totally possible that I didn't see it correctly )
Angela
Grade 4/5
Falmouth District School
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<DIV><FONT size=2>If you look carefully at the maps for 2009 and for 2010, so
far, there is not really a significant difference as far as Canada is
concerned.</FONT></DIV>
<DIV><FONT size=2>Last year at this time, there had been 2 reports in
Canada (s. Ontario), while this year there have been 4 reports. Is this
significant? I don't think so. As far as NS is concerned, there are
no reports yet for 2010 while in 2009 the first reports came on April 20, 22,
22, 23. April 20 is only 11 days away.</FONT></DIV>
<DIV><FONT size=2>Most migrating birds time their migration according to
the diurnal cycle (the length of the day) so just because we are experiencing
late spring-like weather here does not necessarily mean birds will arrive here
early. Those outliers which do arrive "early", like the Ruby-crowned
Kinglet that Suzanne and I saw and heard last Tuesday, may be more readily
noticed since it was singing in the warm sunshine.</FONT></DIV>
<DIV><FONT size=2>Overall, I am sceptical that our unseasonably warm weather
here has any effect on the arrival timing of migrating birds.</FONT></DIV>
<DIV><FONT size=2></FONT> </DIV>
<DIV><FONT size=2>Cheers,</FONT></DIV>
<DIV><FONT size=2></FONT> </DIV>
<DIV><FONT size=2>Bob McDonald</FONT></DIV>
<DIV><FONT size=2>Halifax</FONT></DIV>
<DIV><FONT size=2></FONT> </DIV>
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style="BORDER-LEFT: #000000 2px solid; PADDING-LEFT: 5px; PADDING-RIGHT: 0px; MARGIN-LEFT: 5px; MARGIN-RIGHT: 0px"
dir=ltr>
<DIV style="FONT: 10pt arial">----- Original Message ----- </DIV>
<DIV
style="FONT: 10pt arial; BACKGROUND: #e4e4e4; font-color: black"><B>From:</B>
<A title=Htoom@hfx.eastlink.ca href="mailto:Htoom@hfx.eastlink.ca">Hans
Toom</A> </DIV>
<DIV style="FONT: 10pt arial"><B>To:</B> <A title=naturens@chebucto.ns.ca
href="mailto:naturens@chebucto.ns.ca">naturens@chebucto.ns.ca</A> </DIV>
<DIV style="FONT: 10pt arial"><B>Sent:</B> Friday, April 09, 2010 12:22
PM</DIV>
<DIV style="FONT: 10pt arial"><B>Subject:</B> Re: [NatureNS] earliest
hummingbird</DIV>
<DIV><BR></DIV>
<DIV><FONT size=2 face=Arial>Hi all,</FONT></DIV>
<DIV><FONT size=2 face=Arial></FONT> </DIV>
<DIV><FONT size=2 face=Arial>The <STRONG>Ruby-throated Hummingbirds</STRONG>
are about 1400 kilometres further north this year than last year. Last
year they were crossing the North Carolina border in early April while this
year they are probably in Maine already.</FONT></DIV>
<DIV><FONT size=2 face=Arial></FONT> </DIV>
<DIV><FONT size=2 face=Arial>Hans</FONT></DIV>
<BLOCKQUOTE
style="BORDER-LEFT: #000000 2px solid; PADDING-LEFT: 5px; PADDING-RIGHT: 0px; MARGIN-LEFT: 5px; MARGIN-RIGHT: 0px">
<DIV style="FONT: 10pt arial">----- Original Message ----- </DIV>
<DIV
style="FONT: 10pt arial; BACKGROUND: #e4e4e4; font-color: black"><B>From:</B>
<A title=aljoudrey@eastlink.ca href="mailto:aljoudrey@eastlink.ca">Angela
Joudrey*</A> </DIV>
<DIV style="FONT: 10pt arial"><B>To:</B> <A title=naturens@chebucto.ns.ca
href="mailto:naturens@chebucto.ns.ca">naturens@chebucto.ns.ca</A> </DIV>
<DIV style="FONT: 10pt arial"><B>Sent:</B> Friday, April 09, 2010 11:54
AM</DIV>
<DIV style="FONT: 10pt arial"><B>Subject:</B> [NatureNS] earliest
hummingbird</DIV>
<DIV><BR></DIV>
<DIV style="FONT-FAMILY: 'Times New Roman'; FONT-SIZE: 16px">Hello all.<BR
_moz_dirty=""><BR _moz_dirty="">I was wondering what the earliest date was
that you first noticed a hummingbird ( from last spring ). <BR
_moz_dirty=""><BR _moz_dirty="">Unless I read the map wrong on
hummingbird.net, it looks like they are later this year? ( I was showing a
stud