{"version":"1.0","provider_name":"Swiss Ornithological Institute","provider_url":"https:\/\/www.vogelwarte.ch\/en\/","title":"Vogelarten: Arctic Tern","type":"rich","width":600,"height":338,"html":"<blockquote class=\"wp-embedded-content\" data-secret=\"6CBvbtTeAR\"><a href=\"https:\/\/www.vogelwarte.ch\/en\/birds-of-switzerland\/arctic-tern\/\">Arctic Tern<\/a><\/blockquote><iframe sandbox=\"allow-scripts\" security=\"restricted\" src=\"https:\/\/www.vogelwarte.ch\/en\/birds-of-switzerland\/arctic-tern\/embed\/#?secret=6CBvbtTeAR\" width=\"600\" height=\"338\" title=\"&#8220;Arctic Tern&#8221; &#8212; Swiss Ornithological Institute\" data-secret=\"6CBvbtTeAR\" frameborder=\"0\" marginwidth=\"0\" marginheight=\"0\" scrolling=\"no\" class=\"wp-embedded-content\"><\/iframe><script>\n\/*! This file is auto-generated *\/\n!function(d,l){\"use strict\";l.querySelector&&d.addEventListener&&\"undefined\"!=typeof URL&&(d.wp=d.wp||{},d.wp.receiveEmbedMessage||(d.wp.receiveEmbedMessage=function(e){var t=e.data;if((t||t.secret||t.message||t.value)&&!\/[^a-zA-Z0-9]\/.test(t.secret)){for(var s,r,n,a=l.querySelectorAll('iframe[data-secret=\"'+t.secret+'\"]'),o=l.querySelectorAll('blockquote[data-secret=\"'+t.secret+'\"]'),c=new RegExp(\"^https?:$\",\"i\"),i=0;i<o.length;i++)o[i].style.display=\"none\";for(i=0;i<a.length;i++)s=a[i],e.source===s.contentWindow&&(s.removeAttribute(\"style\"),\"height\"===t.message?(1e3<(r=parseInt(t.value,10))?r=1e3:~~r<200&&(r=200),s.height=r):\"link\"===t.message&&(r=new URL(s.getAttribute(\"src\")),n=new URL(t.value),c.test(n.protocol))&&n.host===r.host&&l.activeElement===s&&(d.top.location.href=t.value))}},d.addEventListener(\"message\",d.wp.receiveEmbedMessage,!1),l.addEventListener(\"DOMContentLoaded\",function(){for(var e,t,s=l.querySelectorAll(\"iframe.wp-embedded-content\"),r=0;r<s.length;r++)(t=(e=s[r]).getAttribute(\"data-secret\"))||(t=Math.random().toString(36).substring(2,12),e.src+=\"#?secret=\"+t,e.setAttribute(\"data-secret\",t)),e.contentWindow.postMessage({message:\"ready\",secret:t},\"*\")},!1)))}(window,document);\n\/\/# sourceURL=https:\/\/www.vogelwarte.ch\/wp-includes\/js\/wp-embed.min.js\n<\/script>\n","thumbnail_url":"https:\/\/www.vogelwarte.ch\/wp-content\/uploads\/2026\/03\/2760_1.jpg","thumbnail_width":1600,"thumbnail_height":1200,"description":"The migration route of the Arctic Tern is unique: there are 18,000 kilometres between the Arctic breeding and the Antarctic wintering areas. Some birds can live up to 30 years and cover about one million kilometres during this time, which corresponds with roughly three times the distance between the earth and the moon! As an adaptation to the length of the migration route, the Arctic Tern has another moulting rhythm and replaces its primaries, secondaries and tail feathers markedly quicker than the Common Tern."}