{"id":5534,"date":"2025-02-12T00:20:40","date_gmt":"2025-02-12T00:20:40","guid":{"rendered":"https:\/\/site.itshrt.com\/worldnews\/birds-of-paradise-glow-on-their-mating-parade\/"},"modified":"2025-02-12T00:20:40","modified_gmt":"2025-02-12T00:20:40","slug":"birds-of-paradise-glow-on-their-mating-parade","status":"publish","type":"post","link":"https:\/\/site.itshrt.com\/worldnews\/birds-of-paradise-glow-on-their-mating-parade\/","title":{"rendered":"Birds of Paradise Glow on Their Mating Parade"},"content":{"rendered":"<p> <script async src=\"https:\/\/pagead2.googlesyndication.com\/pagead\/js\/adsbygoogle.js?client=ca-pub-6606220950177433\"\r\n     crossorigin=\"anonymous\"><\/script>\r\n<!-- ItShrt World News -->\r\n<ins class=\"adsbygoogle\"\r\n     style=\"display:block\"\r\n     data-ad-client=\"ca-pub-6606220950177433\"\r\n     data-ad-slot=\"1882483372\"\r\n     data-ad-format=\"auto\"\r\n     data-full-width-responsive=\"true\"><\/ins>\r\n<script>\r\n     (adsbygoogle = window.adsbygoogle || []).push({});\r\n<\/script>\r\n<br \/>\n<\/p>\n<div data-testid=\"companionColumn-0\">\n<div class=\"css-53u6y8\">\n<p class=\"css-at9mc1 evys1bk0\">Elaborate poses, tufts of feathers, flamboyant shuffles along an immaculate forest floor \u2014 male birds-of-paradise have many ways to woo a potential mate.<\/p>\n<p class=\"css-at9mc1 evys1bk0\">But now, by examining prepared specimens at the American Museum of Natural History in New York, scientists have discovered what could be yet another tool in the kit of the tropical birds \u2014 a visual effect known as photoluminescence.<\/p>\n<p class=\"css-at9mc1 evys1bk0\">Sometimes called biofluorescence in living things, this phenomenon occurs when an object absorbs high-energy wavelengths of light and re-emits them as lower energy wavelengths.<\/p>\n<p class=\"css-at9mc1 evys1bk0\">Biofluorescence has already been found in various species of <a class=\"css-yywogo\" href=\"https:\/\/www.nytimes.com\/2022\/07\/19\/science\/lumpfish-glow-ultraviolet.html\" title=\"\">fishes<\/a>, amphibians and <a class=\"css-yywogo\" href=\"https:\/\/www.nytimes.com\/2023\/10\/20\/science\/glowing-fluorescent-mammals-ultra-violet.html\" title=\"\">even mammals<\/a>, from bats to wombats.<\/p>\n<\/div>\n<aside class=\"css-ew4tgv\" aria-label=\"companion column\"\/><\/div>\n<div data-testid=\"companionColumn-1\">\n<div class=\"css-53u6y8\">\n<p class=\"css-at9mc1 evys1bk0\">Interestingly, birds remain woefully understudied when it comes to the optical extras. Until now, no one had looked for the glowing property in birds-of-paradise, which are native to Australia, Indonesia and New Guinea and are famous <a class=\"css-yywogo\" href=\"https:\/\/archive.nytimes.com\/lens.blogs.nytimes.com\/2013\/06\/03\/rare-glimpses-of-birds-of-paradise\/\" title=\"\">for their elaborate mating displays<\/a>.<\/p>\n<p class=\"css-at9mc1 evys1bk0\"><a class=\"css-yywogo\" href=\"https:\/\/doi.org\/10.1098\/rsos.241905\" title=\"\" rel=\"noopener noreferrer\" target=\"_blank\">In a study<\/a> published on Tuesday in the journal Royal Society Open Science, researchers examined prepared specimens housed at the American Museum of Natural History and found evidence of biofluorescence in 37 of 45 birds-of-paradise species.<\/p>\n<p class=\"css-at9mc1 evys1bk0\">\u201cWhat they\u2019re doing is taking this UV color, which they can\u2019t see, and re-emitting it at a wavelength that is actually visible to their eyes,\u201d said <a class=\"css-yywogo\" href=\"https:\/\/snr.unl.edu\/aboutus\/who\/people\/faculty-member.aspx?pid=2838\" title=\"\" rel=\"noopener noreferrer\" target=\"_blank\">Rene Martin<\/a>, the lead author of the study and a biologist at the University of Nebraska-Lincoln. \u201cIn their case, it\u2019s kind of a bright green and green-yellow color.\u201d<\/p>\n<p class=\"css-at9mc1 evys1bk0\">In short, biofluorescence supercharges a bright color to make it even brighter.<\/p>\n<\/div>\n<aside class=\"css-ew4tgv\" aria-label=\"companion column\"\/><\/div>\n<div data-testid=\"companionColumn-2\">\n<div class=\"css-53u6y8\">\n<p class=\"css-at9mc1 evys1bk0\">Out of all the birds-of-paradise species, three genera (Cicinnurs, Seleucidis and Semioptera) showed no evidence of biofluorescence.<\/p>\n<\/div>\n<aside class=\"css-ew4tgv\" aria-label=\"companion column\"\/><\/div>\n<div data-testid=\"companionColumn-3\">\n<div class=\"css-53u6y8\">\n<p class=\"css-at9mc1 evys1bk0\">Dr. Martin said this could be because those birds tended to be much more monogamous, which would mean that there\u2019s less need for elaborate displays and competition between males.<\/p>\n<p class=\"css-at9mc1 evys1bk0\">Also, because the researchers found biofluorescence in the blue-capped ifrit, which is considered to be the lone sister species to the birds-of-paradise, the most likely scenario is that all of these animals descended from a common ancestor that had evolved biofluorescent markings. The three genera that no longer have it, then, must have lost the trait somewhere along the way.<\/p>\n<p class=\"css-at9mc1 evys1bk0\">Earlier studies found that many species of birds-of-paradise evolved another color quirk \u2014 ultrablack feathers that absorbed nearly all the wavelengths of light that strike them.<\/p>\n<p class=\"css-at9mc1 evys1bk0\">The scientists found that many of these flamboyant birds seem to have sections of biofluorescence situated near or framed by the ultrablack. This juxtaposition likely enhances the entire display, which may signal to females that the performer is of good breeding quality.<\/p>\n<p class=\"css-at9mc1 evys1bk0\">While females of many of the birds-of-paradise species also displayed biofluorescent plumage, Dr. Martin said that the female patterns were much more subdued. Females in most of these species are the ones doing the choosing,reinforcing the idea that the males deploy their glowing for sexual selection.<\/p>\n<\/div>\n<aside class=\"css-ew4tgv\" aria-label=\"companion column\"\/><\/div>\n<div data-testid=\"companionColumn-4\">\n<div class=\"css-53u6y8\">\n<p class=\"css-at9mc1 evys1bk0\">Male birds also sometimes display their colors as a way to establish a pecking order. In other species, like snakes, scientists believe that biofluorescence serves as a way to blend in with bright forest backgrounds. So the next-level coloration is quite likely to serve more than one role.<\/p>\n<p class=\"css-at9mc1 evys1bk0\">Though it may seem obvious that biofluorescence would evolve many different times in the animal kingdom for a purpose, scientists caution against the assumption. After all, human teeth fluoresce under ultraviolet light, but that doesn\u2019t seem to help us in any measurable way. Some might even argue <a class=\"css-yywogo\" href=\"https:\/\/www.youtube.com\/watch?v=O15kBAODBo4\" title=\"\" rel=\"noopener noreferrer\" target=\"_blank\">that glowing teeth are a disadvantage<\/a>.<\/p>\n<p class=\"css-at9mc1 evys1bk0\">To prove function, scientists look to a set of five criteria. This list includes whether an animal\u2019s habitat has naturally available levels of the light wavelengths known to be absorbed, or whether an animal\u2019s eyes are likely to be able to see the wavelengths that are re-emitted.<\/p>\n<p class=\"css-at9mc1 evys1bk0\">\u201cIt looks like birds-of-paradise meet four out of the five criteria for visual function,\u201d <a class=\"css-yywogo\" href=\"https:\/\/www.researchgate.net\/profile\/Linda-Reinhold-2\" title=\"\" rel=\"noopener noreferrer\" target=\"_blank\">Linda Reinhold<\/a>, a zoologist at James Cook University in Australia, said in an email.<\/p>\n<p class=\"css-at9mc1 evys1bk0\">However, Ms. Reinhold said the fifth criteria \u2014 which assesses whether an animal\u2019s behavior changes as a result of the biofluorescence \u2014 remains to be tested for birds-of-paradise. Of course, trying to observe finicky birds in remote habitats full of uncontrollable variables may mean that this particular test would not be resolved anytime soon.<\/p>\n<p class=\"css-at9mc1 evys1bk0\">Studying the birds in person would likely have other benefits.<\/p>\n<p class=\"css-at9mc1 evys1bk0\">\u201cThese birds in their natural habitat are going to be even more fluorescent than in museums,\u201d Ms. Reinhold said.<\/p>\n<\/div>\n<aside class=\"css-ew4tgv\" aria-label=\"companion column\"\/><\/div>\n<p><script async src=\"https:\/\/pagead2.googlesyndication.com\/pagead\/js\/adsbygoogle.js?client=ca-pub-6606220950177433\"\r\n     crossorigin=\"anonymous\"><\/script>\r\n<!-- ItShrt World News -->\r\n<ins class=\"adsbygoogle\"\r\n     style=\"display:block\"\r\n     data-ad-client=\"ca-pub-6606220950177433\"\r\n     data-ad-slot=\"1882483372\"\r\n     data-ad-format=\"auto\"\r\n     data-full-width-responsive=\"true\"><\/ins>\r\n<script>\r\n     (adsbygoogle = window.adsbygoogle || []).push({});\r\n<\/script>\r\n<br \/>\n<br \/><a href=\"https:\/\/www.nytimes.com\/2025\/02\/11\/science\/birds-of-paradise-luminescence.html\">Source link <\/a><\/p>\n","protected":false},"excerpt":{"rendered":"<p>Elaborate poses, tufts of feathers, flamboyant shuffles along an immaculate forest floor \u2014 male birds-of-paradise have many ways to woo<\/p>\n","protected":false},"author":1,"featured_media":5535,"comment_status":"","ping_status":"","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[38],"tags":[2268,667,265,1957,402,268,2275],"class_list":["post-5534","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-science","tag-american-museum-of-natural-history","tag-animals","tag-birds","tag-color","tag-museums","tag-research","tag-royal-society-open-science-journal"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v24.2 - 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