{"id":34556,"date":"2021-09-10T11:46:03","date_gmt":"2021-09-10T09:46:03","guid":{"rendered":"https:\/\/foretnature.be\/resume-foret-mail\/pleine-lune-et-blanches-plumes-une-adaptation-efficace\/"},"modified":"2021-09-10T11:46:03","modified_gmt":"2021-09-10T09:46:03","slug":"pleine-lune-et-blanches-plumes-une-adaptation-efficace","status":"publish","type":"resume-foret-mail","link":"https:\/\/foretnature.be\/en\/resume-foret-mail\/pleine-lune-et-blanches-plumes-une-adaptation-efficace\/","title":{"rendered":"Pleine lune et blanches plumes, une adaptation efficace"},"content":{"rendered":"<p>Le plumage de l\u2019effraie des clochers, rapace nocturne connu de tous, varie selon les individus, allant du blanc au roux fonc\u00e9. Intuitivement, on s\u2019attend \u00e0 ce que les nuits de pleine lune, les chouettes soient plus vite rep\u00e9r\u00e9es par leurs proies. La r\u00e9alit\u00e9 n\u2019est pas aussi simple. Apr\u00e8s plus de 20 ans de suivi d\u2019une population de chouettes effraies en Suisse, il s\u2019av\u00e8re effectivement que les individus au plumage fonc\u00e9 aient plus de mal \u00e0 chasser les nuits de pleine lune : ces chouettes ram\u00e8nent moins de proies au nid. En revanche, les effraies aux plumes blanches s\u2019en sortent aussi bien les nuits claires que les nuits sans lune. Il est vrai que les campagnols dont se nourrissent les chouettes d\u00e9tectent plus facilement leur pr\u00e9dateur les nuits de pleine lune, quel que soit le plumage de la chouette. Quand les micromammif\u00e8res d\u00e9tectent leur pr\u00e9dateur, ils s\u2019immobilisent. Toutefois, cette immobilit\u00e9 dure plus longtemps les nuits de pleine lune et face \u00e0 une chouette au plumage blanc uniquement. Les campagnols sont en fait effray\u00e9s par la lumi\u00e8re de la lune qui se refl\u00e8te dans les plumes blanches de la chouette, ce qui lui permet de les capturer facilement. L\u2019effraie des clochers est la seule \u00e0 utiliser cette ruse ; les micromammif\u00e8res ne s\u2019y adaptent donc pas et l\u2019effet de surprise reste total. Les nuits claires, les chouettes effraies blanches s\u2019autorisent m\u00eame des parties de chasse en prairies, alors que leurs cong\u00e9n\u00e8res au plumage fonc\u00e9 restent camoufl\u00e9s en lisi\u00e8re de for\u00eats. Diminuer la pollution lumineuse et laisser la lumi\u00e8re naturelle de la lune jouer son r\u00f4le pourrait ainsi b\u00e9n\u00e9ficier \u00e0 l\u2019\u00e9l\u00e9gante chouette.<br \/>\nKelber A. et al. (2019). Barn owls reflect moonlight in order to stun their prey. The Conversation, 2 septembre 2019.<\/p>","protected":false},"excerpt":{"rendered":"<p>Le plumage de l\u2019effraie des clochers, rapace nocturne connu de tous, varie selon les individus, allant du blanc au roux fonc\u00e9. Intuitivement, on s\u2019attend \u00e0 ce que les nuits de pleine lune, les chouettes soient plus vite rep\u00e9r\u00e9es par leurs proies. La r\u00e9alit\u00e9 n\u2019est pas aussi simple. Apr\u00e8s plus de 20 ans de suivi d\u2019une [&hellip;]<\/p>","protected":false},"featured_media":0,"template":"","categories":[50],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v23.2 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>Pleine lune et blanches plumes, une adaptation efficace - For\u00eat.Nature<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/foretnature.be\/en\/resume-foret-mail\/pleine-lune-et-blanches-plumes-une-adaptation-efficace\/\" \/>\n<meta property=\"og:locale\" content=\"en_GB\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Pleine lune et blanches plumes, une adaptation efficace - For\u00eat.Nature\" \/>\n<meta property=\"og:description\" content=\"Le plumage de l\u2019effraie des clochers, rapace nocturne connu de tous, varie selon les individus, allant du blanc au roux fonc\u00e9. Intuitivement, on s\u2019attend \u00e0 ce que les nuits de pleine lune, les chouettes soient plus vite rep\u00e9r\u00e9es par leurs proies. La r\u00e9alit\u00e9 n\u2019est pas aussi simple. 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Intuitivement, on s\u2019attend \u00e0 ce que les nuits de pleine lune, les chouettes soient plus vite rep\u00e9r\u00e9es par leurs proies. La r\u00e9alit\u00e9 n\u2019est pas aussi simple. 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