<div dir="ltr">One reason we birders should be regularly submitting our bird observations to eBird.<div><br></div><div>I have been using a smartphone app to do that, and it is easy and quick.</div><div><br></div><div>Joel</div><div><br></div><div><br><div class="gmail_quote">---------- Forwarded message ----------<br>From: <b class="gmail_sendername">Cornell Lab of Ornithology</b> <span dir="ltr"><<a href="mailto:pel27@cornell.edu">pel27@cornell.edu</a>></span><br>Date: Wed, Jan 20, 2016 at 7:31 AM<br>Subject: News Release: Bird Migrations Revealed by Citizen Science Data<br>To: <a href="mailto:jdunnette@gmail.com">jdunnette@gmail.com</a><br><br><br><u></u>
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<td width="600" valign="top" style="border-collapse:collapse;color:#202020;font-family:Georgia;font-size:14px;line-height:150%;text-align:left"><h2 style="text-align:center;color:#202020;display:block;font-family:Georgia;font-size:18px;font-weight:normal;line-height:100%;margin-top:0;margin-right:0;margin-bottom:10px;margin-left:0"><span style="font-size:14px;line-height:21px;text-align:left"> </span><strong style="font-size:14px;line-height:21px;text-align:left"><span style="font-size:18px">Citizen Science Reveals Annual Bird<br>
Migrations Across Continents</span></strong><br>
<em style="font-size:14px;line-height:21px;text-align:left">Data-driven animation shows routes for 118 species</em></h2>
<div style="text-align:center"><strong>For Release</strong>: January 20, 2016<br>
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<td style="border-collapse:collapse"><a href="http://cornell.us2.list-manage.com/track/click?u=b35ddb671faf4a16c0ce32406&id=55a8b815fd&e=1881944673" style="color:#990000;font-weight:normal;text-decoration:underline" target="_blank"><img align="none" height="262" src="https://gallery.mailchimp.com/b35ddb671faf4a16c0ce32406/images/80836add-24c1-4283-af7f-52627429769f.jpg" style="width:275px;min-height:262px;margin:0px;border:0;line-height:100%;outline:none;text-decoration:none;display:inline" width="275"></a></td>
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<td style="border-collapse:collapse"><span style="font-size:12px"><span style="font-family:arial,helvetica neue,helvetica,sans-serif">Click image to see animated map of bird migration movements for an entire year. Animation by Frank La Sorte, Cornell Lab of Ornithology.</span></span></td>
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<em>Ithaca, NY</em>—For the first time, scientists at the <a href="http://cornell.us2.list-manage.com/track/click?u=b35ddb671faf4a16c0ce32406&id=2a734cc910&e=1881944673" style="color:#990000;font-weight:normal;text-decoration:underline" target="_blank">Cornell Lab of Ornithology</a> have documented migratory movements of bird populations spanning the entire year for 118 species throughout the Western Hemisphere. The study finds broad similarity in the routes used by specific groups of species—vividly demonstrated by animated maps showing patterns of movement across the annual cycle. The results of these analyses were published today in the <em><a href="http://cornell.us2.list-manage.com/track/click?u=b35ddb671faf4a16c0ce32406&id=65bb846a88&e=1881944673" style="color:#990000;font-weight:normal;text-decoration:underline" target="_blank">Proceedings of the Royal Society B: Biological Sciences</a>. </em><br>
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"We used millions of observations from the <a href="http://cornell.us2.list-manage1.com/track/click?u=b35ddb671faf4a16c0ce32406&id=621976a854&e=1881944673" style="color:#990000;font-weight:normal;text-decoration:underline" target="_blank">eBird</a> citizen-science database," says lead author Frank La Sorte, a research associate at the Cornell Lab. "After tracing the migration routes of all these species and comparing them, we concluded that a combination of geographic features and broad-scale atmospheric conditions influence the choice of routes used during spring and fall migration."<br>
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La Sorte says a key finding of the study is that bird species that head out over the Atlantic Ocean during fall migration to spend winter in the Caribbean and South America follow a clockwise loop and take a path farther inland on their return journey in the spring. Species that follow this broad pattern include Bobolinks, Yellow and Black-billed cuckoos, Connecticut and Cape May warblers, Bicknell’s Thrush, and shorebirds, such as the American Golden Plover.<br><br>
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<td style="border-collapse:collapse"><span style="font-size:12px"><span style="font-family:arial,helvetica neue,helvetica,sans-serif">Click image to get larger version with bird-ID legend. Graphic by Misaki Ouchida, Bartels Science Illustration Intern. Data sources: eBird, NASA.</span></span></td>
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"These looped pathways help the birds take advantage of conditions in the atmosphere," explains La Sorte. "Weaker headwinds and a push from the northeast trade winds as they move farther south make the fall journey a bit easier. The birds take this shorter, more direct route despite the dangers of flying over open-ocean."<br>
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The study finds the spring migration path follows a more roundabout route but the birds move faster thanks to the presence of strong tailwinds as they head north to their breeding grounds.<br>
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For species that do not fly over the open ocean, the study finds that many use the same migration routes in the spring and fall. Geographic features shaping this pattern includes mountain chains or isthmuses that funnel migrants along narrow routes.<br>
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"It’s an exciting new area of research," says La Sorte. "By using eBird data and other forms of migration tracking information, we’re getting a more detailed picture than ever before about where and when birds migrate. That’s the kind of information we need to make smart conservation decisions for species that live in vastly different regions during the year. Citizen science makes it possible to do this for populations across an entire hemisphere."<br>
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<div><strong>Contact</strong>: Pat Leonard, <a href="tel:%28607%29%20254-2137" value="+16072542137" target="_blank">(607) 254-2137</a>, <a href="mailto:pel27@cornell.edu" style="color:#990000;font-weight:normal;text-decoration:underline" target="_blank">pel27@cornell.edu</a></div>
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</div><br><br clear="all"><div><br></div>-- <br><div class="gmail_signature">Joel Dunnette<br><br>Byron / Rochester MN<br><br>507-269-7064 </div>
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