{"id":5573,"date":"2022-11-08T13:27:57","date_gmt":"2022-11-08T12:27:57","guid":{"rendered":"https:\/\/www.vogelwarte.ch\/voegel-der-schweiz\/rock-ptarmigan\/"},"modified":"2026-03-11T14:51:11","modified_gmt":"2026-03-11T13:51:11","slug":"rock-ptarmigan","status":"publish","type":"voegel-der-schweiz","link":"https:\/\/www.vogelwarte.ch\/en\/birds-of-switzerland\/rock-ptarmigan\/","title":{"rendered":"Rock Ptarmigan"},"content":{"rendered":"","protected":false},"featured_media":124794,"template":"","afvs_foerdermassnahmen":[],"afvs_npa-handlungsebene":[],"afvs_lebensraum":[],"afvs_nahrung":[],"afvs_stakeholder":[],"afvs_npa-verantwortung":[],"lebensraum":[382],"nahrung":[363,374,386],"afvs_npa-dringlichkeit":[],"rote-liste-schweiz":[348],"vogelgruppe":[387],"class_list":["post-5573","voegel-der-schweiz","type-voegel-der-schweiz","status-publish","has-post-thumbnail","hentry","lebensraum-hochgebirge","nahrung-insekten-und-spinnen","nahrung-pflanzen","nahrung-fruechte","rote-liste-schweiz-nahezu-bedroht-nt","vogelgruppe-raufusshuehner"],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v28.3 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Vogelarten: Rock Ptarmigan<\/title>\n<meta name=\"description\" content=\"The Rock Ptarmigan is excellently adapted to the severe cold and harsh living conditions in the high mountains. If the temperature exceeds 15\u00b0C, it withdraws to shady places where it is cooler. Before winter, it changes to a thick, white winter plumage. During this time its toes are also more heavily feathered allowing the birds to walk over the snow more easily. The Rock Ptarmigan is extremely well camouflaged. Even when the croaking calls are heard, the cocks remain difficult to spot.\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/www.vogelwarte.ch\/en\/birds-of-switzerland\/rock-ptarmigan\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Vogelarten: Rock Ptarmigan\" \/>\n<meta property=\"og:description\" content=\"The Rock Ptarmigan is excellently adapted to the severe cold and harsh living conditions in the high mountains. If the temperature exceeds 15\u00b0C, it withdraws to shady places where it is cooler. Before winter, it changes to a thick, white winter plumage. During this time its toes are also more heavily feathered allowing the birds to walk over the snow more easily. The Rock Ptarmigan is extremely well camouflaged. 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