{"id":3872,"date":"2026-10-12T19:45:31","date_gmt":"2026-10-12T18:45:31","guid":{"rendered":"https:\/\/www.laurensoff.com\/wordpress\/?p=3872"},"modified":"2026-10-12T19:54:28","modified_gmt":"2026-10-12T18:54:28","slug":"la-formation-des-nuees-detourneaux-que-lon-appelle-des-murmurations","status":"publish","type":"post","link":"https:\/\/www.laurensoff.com\/wordpress\/la-formation-des-nuees-detourneaux-que-lon-appelle-des-murmurations\/","title":{"rendered":"La formation des nu\u00e9es d&#8217;\u00e9tourneaux (que l&#8217;on appelle des murmurations)"},"content":{"rendered":"<p data-path-to-node=\"0\"><strong>La formation des nu\u00e9es d&#8217;\u00e9tourneaux<\/strong> (que l&#8217;on appelle des <b data-path-to-node=\"0\" data-index-in-node=\"58\">murmurations<\/b>) est l&#8217;un des spectacles les plus fascinants de la nature. Des milliers, voire des millions d&#8217;oiseaux se d\u00e9placent en parfaite harmonie, formant des vagues et des figures mouvantes dans le ciel sans jamais se collisionner.<\/p>\n<p data-path-to-node=\"1\">Voici comment ce ph\u00e9nom\u00e8ne extraordinaire est rendu possible :<\/p>\n<h3 data-path-to-node=\"2\">1. Le principe du &#8220;voisin le plus proche&#8221;<\/h3>\n<p data-path-to-node=\"3\">Contrairement \u00e0 ce que l&#8217;on pourrait penser, il n&#8217;y a <b data-path-to-node=\"3\" data-index-in-node=\"54\">pas de chef d&#8217;orchestre<\/b> ou de leader qui guide la nu\u00e9e. Des \u00e9tudes scientifiques (notamment men\u00e9es par des physiciens italiens) ont montr\u00e9 que chaque \u00e9tourneau ne surveille pas toute la nu\u00e9e, mais applique une r\u00e8gle math\u00e9matique simple : <b data-path-to-node=\"3\" data-index-in-node=\"292\">il ajuste sa position, sa vitesse et sa direction en fonction de ses 6 ou 7 voisins imm\u00e9diats<\/b>.<\/p>\n<ul data-path-to-node=\"4\">\n<li>\n<p data-path-to-node=\"4,0,0\">Si un voisin imm\u00e9diat tourne ou acc\u00e9l\u00e8re, l&#8217;oiseau fait de m\u00eame instantan\u00e9ment.<\/p>\n<\/li>\n<li>\n<p data-path-to-node=\"4,1,0\">Cette information se propage de proche en proche \u00e0 la vitesse de l&#8217;\u00e9clair \u00e0 travers toute la colonie.<\/p>\n<\/li>\n<\/ul>\n<h3 data-path-to-node=\"5\">2. Une vitesse de r\u00e9action fulgurante<\/h3>\n<p data-path-to-node=\"6\">Le temps de r\u00e9action d&#8217;un \u00e9tourneau face au mouvement de son voisin est estim\u00e9 entre <b data-path-to-node=\"6\" data-index-in-node=\"85\">10 et 100 millisecondes<\/b>, ce qui est plus rapide que le clignement d&#8217;un \u0153il. Cette r\u00e9activit\u00e9 exceptionnelle permet au signal de propagation de traverser le groupe presque instantan\u00e9ment, cr\u00e9ant une vague de mouvement fluide et coordonn\u00e9e.<\/p>\n<h3 data-path-to-node=\"7\">3. Les raisons de ce comportement<\/h3>\n<p data-path-to-node=\"8\">Ce ballet a\u00e9rien n&#8217;est pas seulement esth\u00e9tique, il a une fonction vitale :<\/p>\n<ul data-path-to-node=\"9\">\n<li style=\"list-style-type: none;\">\n<ul data-path-to-node=\"9\">\n<li>\n<p data-path-to-node=\"9,0,0\"><b data-path-to-node=\"9,0,0\" data-index-in-node=\"0\">La d\u00e9fense contre les pr\u00e9dateurs :<\/b> Les faucons et autres rapaces ont \u00e9norm\u00e9ment de mal \u00e0 cibler un individu pr\u00e9cis au milieu de cette masse mouvante et hypnotique.<\/p>\n<\/li>\n<li>\n<p data-path-to-node=\"9,1,0\"><b data-path-to-node=\"9,1,0\" data-index-in-node=\"0\">La communication et la chaleur :<\/b> Ces rassemblements se produisent g\u00e9n\u00e9ralement \u00e0 la tomb\u00e9e de la nuit, avant de s&#8217;installer dans des dortoirs communs pour se prot\u00e9ger du froid et \u00e9changer des informations sur les sources de nourriture.<\/p>\n<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"alignnone wp-image-3876\" src=\"https:\/\/www.laurensoff.com\/wordpress\/wp-content\/uploads\/2026\/10\/images-7-1.jpg\" alt=\"\" width=\"416\" height=\"233\" srcset=\"https:\/\/www.laurensoff.com\/wordpress\/wp-content\/uploads\/2026\/10\/images-7-1.jpg 597w, https:\/\/www.laurensoff.com\/wordpress\/wp-content\/uploads\/2026\/10\/images-7-1-300x168.jpg 300w\" sizes=\"auto, (max-width: 416px) 100vw, 416px\" \/><\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"alignnone wp-image-3874\" src=\"https:\/\/www.laurensoff.com\/wordpress\/wp-content\/uploads\/2026\/10\/images-6-2.jpg\" alt=\"\" width=\"414\" height=\"280\" srcset=\"https:\/\/www.laurensoff.com\/wordpress\/wp-content\/uploads\/2026\/10\/images-6-2.jpg 544w, https:\/\/www.laurensoff.com\/wordpress\/wp-content\/uploads\/2026\/10\/images-6-2-300x202.jpg 300w\" sizes=\"auto, (max-width: 414px) 100vw, 414px\" \/><\/p>\n","protected":false},"excerpt":{"rendered":"<p>La formation des nu\u00e9es d&#8217;\u00e9tourneaux (que l&#8217;on appelle des murmurations) est l&#8217;un des spectacles les&#8230;<\/p>\n","protected":false},"author":1,"featured_media":3873,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_jetpack_newsletter_access":"","_jetpack_dont_email_post_to_subs":false,"_jetpack_newsletter_tier_id":0,"_jetpack_memberships_contains_paywalled_content":false,"_jetpack_feature_clip_id":0,"_jetpack_memberships_contains_paid_content":false,"footnotes":"","jetpack_publicize_message":"","jetpack_publicize_feature_enabled":true,"jetpack_social_post_already_shared":true,"jetpack_social_options":{"image_generator_settings":{"template":"highway","default_image_id":0,"font":"","enabled":false},"version":2},"jetpack_post_was_ever_published":false},"categories":[11743,6984,13498],"tags":[13499,13500,13501,11745,13502,11752,11753,13503,11755,13504,13508,13506,13507,13505,11759,11761,13509,13510,13511,11767,11769,11770,11771,11772,11777,11776,11778,11779,11780,11781,13554,13555,11784,11785,11788,13513,13512,11787,11789,11791,13514,13515,13519,13520,13522,13521,13517,13516,13518,11797,13557,11798,11800,13523,11801,11805,13524,11806,13525,13527,13526,11808,13528,13529,13556,11819,13531,13530,13532,13533,11829,13534,11831,13535,13536,11839,13537,13538,13539,11845,11846,11847,13540,13541,13542,13543,13544,13546,13545,13548,13547,13549,13550,11869,11870,13551,11873,11874,13552,13553],"class_list":["post-3872","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-animaux","category-chefs-doeuvre","category-etourneaux","tag-aigle-botte","tag-aigle-criard","tag-aigle-imperial","tag-aigle-royal","tag-autour-des-palombes","tag-avocette-elegante","tag-balbuzard-pecheur","tag-barge-a-queue-noire","tag-becassine-des-marais","tag-bernache-du-canada","tag-busard-cendre","tag-busard-des-roseaux","tag-busard-saint-martin","tag-buse-pattue","tag-buse-variable","tag-canard-colvert","tag-canard-pilet","tag-canard-sifflleur","tag-canard-souchet","tag-chardonneret-elegant","tag-chouette-hulotte","tag-cigogne-blanche","tag-cigogne-noire","tag-circaete-jean-le-blanc","tag-corbeau-freux","tag-cormoran-huppe","tag-corneille-noire","tag-coucou-gris","tag-courlis-cendre","tag-cygne-tubercule","tag-effraie-des-clochers","tag-engoulevent-deurope","tag-epervier-deurope","tag-etourneau-sansonnet","tag-faucon-crecerelle","tag-faucon-emerillon","tag-faucon-hobereau","tag-faucon-pelerin","tag-flamant-rose","tag-fou-de-bassan","tag-foulque-macroule","tag-fregatte-superbe","tag-goeland-argente","tag-goeland-brun","tag-goeland-leucophee","tag-goeland-marin","tag-grand-corbeau","tag-grand-cormoran","tag-grande-aigrette","tag-grebe-huppe","tag-grosbec-casse-noyaux","tag-grue-cendree","tag-guepier-deurope","tag-guillemot-de-troil","tag-gypaete-barbu","tag-heron-cendre","tag-heron-pourpre","tag-hibou-moyen-duc","tag-hirondelle-de-fenetre","tag-hirondelle-de-rivage","tag-hirondelle-rustique","tag-huppe-fasciee","tag-jabiru-dafrique","tag-jars-sauvage","tag-linotte-melodieuse","tag-macareux-moine","tag-martinet-a-ventre-blanc","tag-martinet-noir","tag-milan-noir","tag-milan-royal","tag-mouette-rieuse","tag-mouette-tridactyle","tag-oie-cendree","tag-oie-des-moissons","tag-oie-rieuse","tag-pelican-blanc","tag-pelican-frise","tag-petit-gravelot","tag-pigeon-colombin","tag-pigeon-ramier","tag-pinson-des-arbres","tag-pinson-du-nord","tag-pipit-des-arbres","tag-pipit-farlouse","tag-pluvier-dore","tag-pygargue-a-queue-blanche","tag-rollier-deurope","tag-sarcelle-dete","tag-sarcelle-dhiver","tag-sterne-caugek","tag-sterne-pierregarin","tag-tadorne-de-belon","tag-tourterelle-des-bois","tag-tourterelle-turque","tag-traquet-motteux","tag-traquet-rieur","tag-vanneau-huppe","tag-vautour-fauve","tag-vautour-moine","tag-vautour-percnoptere"],"jetpack_publicize_connections":[],"jetpack_sharing_enabled":true,"jetpack_featured_media_url":"https:\/\/www.laurensoff.com\/wordpress\/wp-content\/uploads\/2026\/10\/images-5-2.jpg","_links":{"self":[{"href":"https:\/\/www.laurensoff.com\/wordpress\/wp-json\/wp\/v2\/posts\/3872","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.laurensoff.com\/wordpress\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.laurensoff.com\/wordpress\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.laurensoff.com\/wordpress\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.laurensoff.com\/wordpress\/wp-json\/wp\/v2\/comments?post=3872"}],"version-history":[{"count":2,"href":"https:\/\/www.laurensoff.com\/wordpress\/wp-json\/wp\/v2\/posts\/3872\/revisions"}],"predecessor-version":[{"id":3877,"href":"https:\/\/www.laurensoff.com\/wordpress\/wp-json\/wp\/v2\/posts\/3872\/revisions\/3877"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.laurensoff.com\/wordpress\/wp-json\/wp\/v2\/media\/3873"}],"wp:attachment":[{"href":"https:\/\/www.laurensoff.com\/wordpress\/wp-json\/wp\/v2\/media?parent=3872"}],"wp:term":[{"taxonomy":"category","embeddable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