{"version":"1.0","provider_name":"Polen Travel (NL)","provider_url":"https:\/\/www.polen.travel\/nl","author_name":"Polen Travel (NL)","author_url":"https:\/\/www.polen.travel\/nl","title":"Biebrza\u0144ski Nationaal Park - Polen Travel (NL)","type":"rich","width":600,"height":338,"html":"<blockquote class=\"wp-embedded-content\" data-secret=\"sk5ZaHeCYI\"><a href=\"https:\/\/www.polen.travel\/nl\/biebrzanski-nationaal-park\/\">Biebrza\u0144ski Nationaal Park<\/a><\/blockquote><iframe sandbox=\"allow-scripts\" security=\"restricted\" src=\"https:\/\/www.polen.travel\/nl\/biebrzanski-nationaal-park\/embed\/#?secret=sk5ZaHeCYI\" width=\"600\" height=\"338\" title=\"&#8222;Biebrza\u0144ski Nationaal Park&#8221; &#8212; Polen Travel (NL)\" data-secret=\"sk5ZaHeCYI\" frameborder=\"0\" marginwidth=\"0\" marginheight=\"0\" scrolling=\"no\" class=\"wp-embedded-content\"><\/iframe><script type=\"text\/javascript\">\n\/* <![CDATA[ *\/\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\/* ]]> *\/\n<\/script>\n","thumbnail_url":"https:\/\/wp-nl.poland.travel\/wp-content\/uploads\/sites\/23\/2023\/02\/91275946_Fotolia_Biebrzanski-Park-Narodowy_HR.jpg","thumbnail_width":1920,"thumbnail_height":416,"description":"De moerassen van de Biebrza-rivier staan \u200b\u200bwereldwijd bekend als de broedplaats van vele zeldzame soorten Europese watervogels en roofvogels (ongeveer 235 soorten, waaronder 157 nestvogels). In het voorjaar, wanneer de Biebrza zijn overstromingsgebied van enkele vierkante kilometer overstijgt, verzamelen zich hier duizenden trekvogels. Om ze&nbsp;te bewonderen hebben de bezoekers hier houten observatietorens, &nbsp;loopbruggen, fiets- en [&hellip;]"}