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& --001a1133b2ae9ef073051e9abd8e Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: quoted-printable An over-simplified version of the story here, but...males in a number of temperate-breeding songbird species experience seasonal fluctuations in testosterone levels that often correlate with song production and levels of parental care: increases of plasma testosterone in the spring correlate with increased song production, reduced levels in late breeding stages (e.g., the nestling period) can correlate with increased male parental care (e.g., feeding of young), and then some males/species experience another small increase in testosterone levels later in the season which correlates with increased singing activity again this time of year (though most birds are very quiet now). There are many additional factors in play such as photoperiod, life history traits and mating systems of different species, nest success etc... james On Sun, Aug 30, 2015 at 1:24 PM, Donna Crossland <dcrossland@eastlink.ca> wrote: > I have awoken the past four mornings with a persistently singing Red-eyed > vireo, always from the same location. It=E2=80=99s as if it is springtim= e again. > It=E2=80=99s lovely, but a little confusing. We had a pair earlier in th= e season > in this same location who presumably nested. Territorial singing long > since stopped sometime last July. > > > > Has anyone else experienced this species (or other species?) conducting > this behavior in late August? I presume it is a juvenile male who has > gotten ahead of himself. Any other explanations? > > > > Hopefully he=E2=80=99ll stop soon and remember to migrate. > > > > Donna Crossland > > > > *From:* naturens-owner@chebucto.ns.ca [mailto: > naturens-owner@chebucto.ns.ca] *On Behalf Of *Jim Wolford > *Sent:* August-30-15 11:58 AM > *To:* naturens > *Subject:* [NatureNS] re unknown nest > > > > Dave and all, your side view definitely shows it to be a vireo nest, and > the habitat suggests almost certainly a red-eyed vireo built it. Cheers > from Jim in Wolfville. > > > > Begin forwarded message: > > > > *From: *David & Alison Webster <dwebster@glinx.com> > > *Subject: Re: [NatureNS] unknown nest* > > *Date: *August 30, 2015 at 9:14:57 AM ADT > > *To: *naturens@chebucto.ns.ca > > *Reply-To: *naturens@chebucto.ns.ca > > > > Thanks Bev & Judy. > DW > ----- Original Message ----- From: "Bev Wigney" <bkwigney@gmail.com> > To: <naturens@chebucto.ns.ca> > Sent: Saturday, August 29, 2015 8:50 PM > Subject: Re: [NatureNS] unknown nest > > > > Dave and all, > > I would guess that would be a Vireo nest. Seabrooke Leckie wrote a post > about them on her blog (she's from back in the part of Ontario where I co= me > from). She's one of the co-authors of the new Peterson's moth guide, by > the way. Anyhow, take a look at the photos here. Most birch nests I've > seen -- vireo nests -- were usually built in the fork of a branch and > fastened to it almost as if by birch strip strapping. They are usually > about head height. > http://seabrookeleckie.com/2011/03/03/vireo-nest/ > > regards, > Bev Wigney > Round Hill, NS > > > On 2015-08-29, at 8:26 PM, David & Alison Webster <dwebster@glinx.com> > wrote: > > > Dear All, Aug 29, 2015 > This nest was in White Pine woods (Cambridge woodlot), about 5'4" up in = a > maple branch, clearly this year's but unoccupied and about 7cm in length > and diameter (external). It was overhanging a woods road and right in the > open. Body was mostly strips of inner bark fiber interwoven with white > birch curls (none nearby), twigs (?) and kleenex (?). Lining was mostly > White Pine needles. > Perhaps someone can put a name to this. > Top view > > https://www.flickr.com/photos/91817127@N08/20366053034/in/dateposted-publ= ic/ > > Side view > > https://www.flickr.com/photos/91817127@N08/20367594653/in/dateposted-publ= ic/ > > YT, DW, Kentville > > > > ----- > No virus found in this message. > Checked by AVG - www.avg.com > Version: 2015.0.6125 / Virus Database: 4409/10538 - Release Date: 08/29/1= 5 > > > > > --=20 James Churchill Kentville, Nova Scotia jameslchurchill@gmail.com (902) 681-2374 --001a1133b2ae9ef073051e9abd8e Content-Type: text/html; charset=UTF-8 Content-Transfer-Encoding: quoted-printable <div dir=3D"ltr">An over-simplified version of the story here, but...males = in a number of temperate-breeding songbird species experience seasonal fluc= tuations in testosterone levels that often correlate with song production a= nd levels of parental care: increases of plasma testosterone in the spring = correlate with increased song production, reduced levels in late breeding s= tages (e.g., the nestling period) can correlate with increased male parenta= l care (e.g., feeding of young), and then some males/species experience ano= ther small increase in testosterone levels later in the season which correl= ates with increased singing activity again this time of year (though most b= irds are very quiet now). There are many additional factors in play such as= photoperiod, life history traits and mating systems of different species, = nest success etc...<div><div>james</div><div><br></div><div><div class=3D"g= mail_extra"><div class=3D"gmail_quote">On Sun, Aug 30, 2015 at 1:24 PM, Don= na Crossland <span dir=3D"ltr"><<a href=3D"mailto:dcrossland@eastlink.ca= " target=3D"_blank">dcrossland@eastlink.ca</a>></span> wrote:<br><blockq= uote class=3D"gmail_quote" style=3D"margin:0px 0px 0px 0.8ex;border-left-wi= dth:1px;border-left-color:rgb(204,204,204);border-left-style:solid;padding-= left:1ex"><div lang=3D"EN-CA" link=3D"blue" vlink=3D"purple"><div><p class= =3D"MsoNormal"><span style=3D"font-size:11pt;font-family:Calibri,sans-serif= ;color:rgb(31,73,125)">I have awoken the past four mornings with a persiste= ntly singing Red-eyed vireo, always from the same location.=C2=A0 It=E2=80= =99s as if it is springtime again.=C2=A0 It=E2=80=99s lovely, but a little = confusing.=C2=A0 We had a pair earlier in the season in this same location = who presumably nested.=C2=A0 Territorial singing long since stopped sometim= e last July.=C2=A0 <u></u><u></u></span></p><p class=3D"MsoNormal"><span st= yle=3D"font-size:11pt;font-family:Calibri,sans-serif;color:rgb(31,73,125)">= <u></u>=C2=A0<u></u></span></p><p class=3D"MsoNormal"><span style=3D"font-s= ize:11pt;font-family:Calibri,sans-serif;color:rgb(31,73,125)">Has anyone el= se experienced this species (or other species?)=C2=A0 conducting this behav= ior in late August?=C2=A0 I presume it is a juvenile male who has gotten ah= ead of himself.=C2=A0 Any other explanations?=C2=A0 <u></u><u></u></span></= p><p class=3D"MsoNormal"><span style=3D"font-size:11pt;font-family:Calibri,= sans-serif;color:rgb(31,73,125)"><u></u>=C2=A0<u></u></span></p><p class=3D= "MsoNormal"><span style=3D"font-size:11pt;font-family:Calibri,sans-serif;co= lor:rgb(31,73,125)">Hopefully he=E2=80=99ll stop soon and remember to migra= te.<u></u><u></u></span></p><p class=3D"MsoNormal"><span style=3D"font-size= :11pt;font-family:Calibri,sans-serif;color:rgb(31,73,125)"><u></u>=C2=A0<u>= </u></span></p><p class=3D"MsoNormal"><span style=3D"font-size:11pt;font-fa= mily:Calibri,sans-serif;color:rgb(31,73,125)">Donna Crossland<u></u><u></u>= </span></p><p class=3D"MsoNormal"><span style=3D"font-size:11pt;font-family= :Calibri,sans-serif;color:rgb(31,73,125)"><u></u>=C2=A0<u></u></span></p><d= iv><div style=3D"border-style:solid none none;border-top-color:rgb(181,196,= 223);border-top-width:1pt;padding:3pt 0cm 0cm"><p class=3D"MsoNormal"><b><s= pan lang=3D"EN-US" style=3D"font-size:10pt;font-family:Tahoma,sans-serif">F= rom:</span></b><span lang=3D"EN-US" style=3D"font-size:10pt;font-family:Tah= oma,sans-serif"> <a href=3D"mailto:naturens-owner@chebucto.ns.ca" target=3D= "_blank">naturens-owner@chebucto.ns.ca</a> [mailto:<a href=3D"mailto:nature= ns-owner@chebucto.ns.ca" target=3D"_blank">naturens-owner@chebucto.ns.ca</a= >] <b>On Behalf Of </b>Jim Wolford<br><b>Sent:</b> August-30-15 11:58 AM<br= ><b>To:</b> naturens<br><b>Subject:</b> [NatureNS] re unknown nest<u></u><u= ></u></span></p></div></div><p class=3D"MsoNormal"><u></u>=C2=A0<u></u></p>= <p class=3D"MsoNormal">Dave and all, your side view definitely shows it to = be a vireo nest, and the habitat suggests almost certainly a red-eyed vireo= built it.=C2=A0 Cheers from Jim in Wolfville.<u></u><u></u></p><div><p cla= ss=3D"MsoNormal"><u></u>=C2=A0<u></u></p><div><p class=3D"MsoNormal">Begin = forwarded message:<u></u><u></u></p></div><p class=3D"MsoNormal"><br><br><u= ></u><u></u></p><div><p class=3D"MsoNormal"><b><span style=3D"font-family:H= elvetica,sans-serif">From: </span></b><span style=3D"font-family:Helvetica,= sans-serif">David & Alison Webster <<a href=3D"mailto:dwebster@glinx= .com" target=3D"_blank">dwebster@glinx.com</a>></span><u></u><u></u></p>= </div><div><p class=3D"MsoNormal"><b><span style=3D"font-family:Helvetica,s= ans-serif">Subject: Re: [NatureNS] unknown nest</span></b><u></u><u></u></p= ></div><div><p class=3D"MsoNormal"><b><span style=3D"font-family:Helvetica,= sans-serif">Date: </span></b><span style=3D"font-family:Helvetica,sans-seri= f">August 30, 2015 at 9:14:57 AM ADT</span><u></u><u></u></p></div><div><p = class=3D"MsoNormal"><b><span style=3D"font-family:Helvetica,sans-serif">To:= </span></b><span style=3D"font-family:Helvetica,sans-serif"><a href=3D"mai= lto:naturens@chebucto.ns.ca" target=3D"_blank">naturens@chebucto.ns.ca</a><= /span><u></u><u></u></p></div><div><p class=3D"MsoNormal"><b><span style=3D= "font-family:Helvetica,sans-serif">Reply-To: </span></b><span style=3D"font= -family:Helvetica,sans-serif"><a href=3D"mailto:naturens@chebucto.ns.ca" ta= rget=3D"_blank">naturens@chebucto.ns.ca</a></span><u></u><u></u></p></div><= p class=3D"MsoNormal"><u></u>=C2=A0<u></u></p><div><p class=3D"MsoNormal">T= hanks Bev & Judy.<br>DW<br>----- Original Message ----- From: "Bev= Wigney" <<a href=3D"mailto:bkwigney@gmail.com" target=3D"_blank">b= kwigney@gmail.com</a>><br>To: <<a href=3D"mailto:naturens@chebucto.ns= .ca" target=3D"_blank">naturens@chebucto.ns.ca</a>><br>Sent: Saturday, A= ugust 29, 2015 8:50 PM<br>Subject: Re: [NatureNS] unknown nest<br><br><br><= br><u></u><u></u></p><p class=3D"MsoNormal">Dave and all,<br><br>I would gu= ess that would be a Vireo nest.=C2=A0 Seabrooke Leckie wrote a post about t= hem on her blog (she's from back in the part of Ontario where I come fr= om).=C2=A0 She's one of the co-authors of the new Peterson's moth g= uide, by the way.=C2=A0 Anyhow, take a look at the photos here.=C2=A0 Most = birch nests I've seen -- vireo nests -- were usually built in the fork = of a branch and fastened to it almost as if by birch strip strapping.=C2=A0= They are usually about head height.<br><a href=3D"http://seabrookeleckie.c= om/2011/03/03/vireo-nest/" target=3D"_blank">http://seabrookeleckie.com/201= 1/03/03/vireo-nest/</a><br><br>regards,<br>Bev Wigney<br>Round Hill, NS<br>= <br><br>On 2015-08-29, at 8:26 PM, David & Alison Webster <<a href= =3D"mailto:dwebster@glinx.com" target=3D"_blank">dwebster@glinx.com</a>>= wrote:<br><br><br><u></u><u></u></p><p class=3D"MsoNormal" style=3D"margin= -bottom:12pt">Dear All, =C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2= =A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0= =C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0Aug 29, 2015<br= >=C2=A0This nest was in White Pine woods (Cambridge woodlot), about 5'4= " up in a maple branch, clearly this year's but unoccupied and abo= ut 7cm in length and diameter (external). It was overhanging a woods road a= nd right in the open. Body was mostly strips of inner bark fiber interwoven= with white birch curls (none nearby), twigs (?) and kleenex (?). Lining wa= s mostly White Pine needles.<br>=C2=A0Perhaps someone can put a name to thi= s.<br>Top view<br><a href=3D"https://www.flickr.com/photos/91817127@N08/203= 66053034/in/dateposted-public/" target=3D"_blank">https://www.flickr.com/ph= otos/91817127@N08/20366053034/in/dateposted-public/</a><br><br>Side view<br= ><a href=3D"https://www.flickr.com/photos/91817127@N08/20367594653/in/datep= osted-public/" target=3D"_blank">https://www.flickr.com/photos/91817127@N08= /20367594653/in/dateposted-public/</a><br><br>YT, DW, Kentville<u></u><u></= u></p><p class=3D"MsoNormal"><br><br>-----<br>No virus found in this messag= e.<br>Checked by AVG - <a href=3D"http://www.avg.com" target=3D"_blank">www= .avg.com</a><br>Version: 2015.0.6125 / Virus Database: 4409/10538 - Release= Date: 08/29/15<u></u><u></u></p><p class=3D"MsoNormal"><u></u>=C2=A0<u></u= ></p></div></div><p class=3D"MsoNormal"><u></u>=C2=A0<u></u></p></div></div= ></blockquote></div><br><br clear=3D"all"><div><br></div>-- <br><div><div d= ir=3D"ltr">James Churchill<br>Kentville, Nova Scotia<br><a href=3D"mailto:j= ameslchurchill@gmail.com" target=3D"_blank">jameslchurchill@gmail.com</a><b= r><a href=3D"tel:%28902%29%20681-2374" value=3D"+19026812374" target=3D"_bl= ank">(902) 681-2374</a><br><br><br><br></div></div> </div></div></div></div> --001a1133b2ae9ef073051e9abd8e--
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Index of Subjects