{"version":"1.0","provider_name":"Swiss Ornithological Institute","provider_url":"https:\/\/www.vogelwarte.ch\/en\/","title":"Vogelarten: Black Redstart","type":"rich","width":600,"height":338,"html":"<blockquote class=\"wp-embedded-content\" data-secret=\"YOTb4qAEMj\"><a href=\"https:\/\/www.vogelwarte.ch\/en\/birds-of-switzerland\/black-redstart\/\">Black Redstart<\/a><\/blockquote><iframe sandbox=\"allow-scripts\" security=\"restricted\" src=\"https:\/\/www.vogelwarte.ch\/en\/birds-of-switzerland\/black-redstart\/embed\/#?secret=YOTb4qAEMj\" width=\"600\" height=\"338\" title=\"&#8220;Black Redstart&#8221; &#8212; Swiss Ornithological Institute\" data-secret=\"YOTb4qAEMj\" 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\/4060_1.jpg","thumbnail_width":1600,"thumbnail_height":1200,"description":"The Black Redstart was originally a pure rock dweller which, however, profited by increasing urbanisation and the spread of settlements and presumably began to nest in our towns and villages in the 18th and 19th century. Here the rocky mountain world is substituted by houses and other buildings. It still breeds up to an altitude of 3200 m and is our most widely distributed breeding species. The constrained grinding song mostly starts long before dawn and is the prelude to the dawn chorus."}