{"id":40686,"date":"2013-06-10T09:16:39","date_gmt":"2013-06-10T08:16:39","guid":{"rendered":"http:\/\/focusingonwildlife.com\/news\/?p=40686"},"modified":"2019-12-22T22:47:52","modified_gmt":"2019-12-22T09:47:52","slug":"mallard-duck-and-bird-magnetic-navigation-in-migration","status":"publish","type":"post","link":"https:\/\/focusingonwildlife.com\/news\/mallard-duck-and-bird-magnetic-navigation-in-migration\/","title":{"rendered":"Mallard duck and bird magnetic navigation in migration"},"content":{"rendered":"

Anas platyrhynchos – Anseriformes – Anatidae – Camargue, Rhône delta, France – the Mallard duck is at the origin of many other domestic ducks species. In captivity it lives 6 times longer than the wild ones and has been domesticated before the chicken. Taking birds in flight is a real exercise and fun to practice with wild non hybridized birds.<\/p>\n

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Bird magnetic navigation in their migrations: From the Daily Mail, 27th of april 2013<\/p>\n

Scientists claim they have discovered how birds find their way across thousands of miles of land guided by the earth’s magnetic field. It is all about sensory hairs in the ears, 2000 times thinner than a human hair which cells contain a single iron ball acting much like a magnet. More details [HERE…]<\/p>\n

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La navigation magnétique des oiseaux lors de leur migrations: Article paru dans le Daily Mail du 27 avril 2013<\/p>\n

Des scientifiques australiens et autrichiens affirment avoir découvert comment les oiseaux trouvent leur chemin au cours de migrations de plusieurs milliers de kilomètres au dessus des terres, guidés par le champs magnétique de la Terre. Sous les plumes de leurs oreilles,ils sont équipés d’un système de navigation interne: des cellules de pileuses responsables de la détection du bruit et la gravité. Chaque cellule est équipée d’une bille de fer 2000 fois plus petite que l’épaisseur d’un cheveu:<\/p>\n

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Diagramme d’une cellule pileuse qui détecte le son et la gravité;<\/p>\n

Les billes de fer se trouvant directement sous les poils joueraient un rôle dans la détection magnétique.<\/p>\n

Diagram: A hair cell which detects sound and gravity. Balls of iron are found directly beneath the hairs and may play a role in magnetic detection<\/p>\n

Le fer, réagissant comme un compas – appelé magnétorécepteur, aiderait les oiseaux à savoir s’ils naviguent vers le nord ou vers le sud, leur position par rapport au soleil et visionner la géographie pour trouver ou retrouver leur chemin. On savait déjà que ces cellules pileuses impliquent l’équilibre et l’audition chez la plupart des animaux. Mattias Lawers, de l’Institut de Pathologie Moléculaire dit: “C’est passionnant, on trouve ces billes de fer chez tous les oiseaux quels qu’ils soient mais pas chez les humains ni chez aucun mammifère”.<\/p>\n

Suivre le lien plus haut pour lire l’article en anglais.<\/p>\n

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Anas platyrhynchos – Anseriformes – Anatidae – Camargue, Rhône delta, France – the Mallard duck is at the origin of many other domestic ducks species. In captivity it lives 6 times longer than the wild ones and has been domesticated before the chicken. Taking birds in flight is a real exercise and fun to practice […]<\/p>\n","protected":false},"author":287,"featured_media":2193018,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"fifu_image_url":"https:\/\/focusingonwildlife.com\/news\/wp-content\/uploads\/2013\/06\/Ois-Colvert-D5200A-7742_140413.jpg","fifu_image_alt":"","footnotes":""},"categories":[6984,5],"tags":[1344,7870,4702,2407,1097,2571],"class_list":["post-40686","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-blogs","category-wildlife","tag-anas-platyrhynchos","tag-anseriformes","tag-bird-navigation","tag-france","tag-mallard","tag-noushka"],"_links":{"self":[{"href":"https:\/\/focusingonwildlife.com\/news\/wp-json\/wp\/v2\/posts\/40686","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/focusingonwildlife.com\/news\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/focusingonwildlife.com\/news\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/focusingonwildlife.com\/news\/wp-json\/wp\/v2\/users\/287"}],"replies":[{"embeddable":true,"href":"https:\/\/focusingonwildlife.com\/news\/wp-json\/wp\/v2\/comments?post=40686"}],"version-history":[{"count":0,"href":"https:\/\/focusingonwildlife.com\/news\/wp-json\/wp\/v2\/posts\/40686\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/focusingonwildlife.com\/news\/wp-json\/wp\/v2\/media\/2193018"}],"wp:attachment":[{"href":"https:\/\/focusingonwildlife.com\/news\/wp-json\/wp\/v2\/media?parent=40686"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/focusingonwildlife.com\/news\/wp-json\/wp\/v2\/categories?post=40686"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/focusingonwildlife.com\/news\/wp-json\/wp\/v2\/tags?post=40686"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}