Some birds have silvered wings


	Some birds have silvered wings

JACraves

9-24-2009 5:42 AM

1204 views

JACraves says:

Previously overlooked type of feather structure gives a silver look to some dark-plumaged, large, open-habitat birds.

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<div style="margin: 12px 0px; font-family: arial; color: #333333; background: #ffffff; border: solid 4px #e5e5e5; width: 100%; clear: left;"><div class="CM_CTB_Content_Wrap" style="margin: 0px; padding: 0px;background-color: #ffffff;"><div style="border-bottom: solid 1px #dcdcdc; white-space: nowrap; margin-bottom: 8px; background-color: #eeeeee ;background-image: url(http://clipmarks.com/images/source-bg.gif); background-repeat: repeat-x; height: 24px; line-height: 24px; vertical-align: middle; padding-bottom: 4px; color: #666666; font-size: 10px;" ><a href="http://clipmarks.com/clip-to-blog/" title="see clips that are hot right now"><img src="http://content.clipmarks.com/blog_embed/5a14ed87-92d4-48a3-b4ae-6616ac51e37a/4961144D-7006-4868-8DD0-F60235CCA72A/" alt="" width="19" height="19" border="0" style="vertical-align: middle; margin: 0px 4px; display: inline; border: none; float:none;" /></a>clipped from <a title="http://news.bbc.co.uk/earth/hi/earth_news/newsid_8263000/8263115.stm" href="http://news.bbc.co.uk/earth/hi/earth_news/newsid_8263000/8263115.stm" style="font-size: 11px;">news.bbc.co.uk</a></div><blockquote style="text-align: left; padding: 0px 8px; margin: 4px 0px 8px 0px; background: transparent; border: none;" cite="http://news.bbc.co.uk/earth/hi/earth_news/newsid_8263000/8263115.stm"><P class="first"><B>Some birds have silver wings, created by a previously unknown structure in their feathers, scientists have discovered.</B></P><P>A delicate arrangement of barbules creates a silver sheen upon otherwise dark feathers. </P><P>The effect is different to the usual iridescence that adds colour to the plumage of many birds. </P><P>Pelicans, ducks, vultures and cranes all possess these silver wings, which might indicate a bird's fitness. </P><P>Researchers have published details of this novel plumage in the Journal of Avian Biology.</P></blockquote></div><div style="margin: 0px 6px 6px 4px;"><table style="font-size: 11px;border-spacing: 0px;padding: 0px;" cellpadding="0" cellspacing="0" width="100%"><tr><td style="background:transparent;border-width:0px;padding:0px;">&nbsp;</td><td align="right" style="background:transparent;border-width:0px;padding:0px;width:107px" width="107"><a href="http://clipmarks.com/share/4961144D-7006-4868-8DD0-F60235CCA72A/blog/" title="blog or email this clip"><img src="http://content7.clipmarks.com/images/c2b-foot.png" border="0" alt="blog it" width="107" height="17" style="border-width:0px;padding:0px;margin:0px;" /></a></td></tr></table></div></div>

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