{"id":6501,"date":"2022-11-08T13:28:25","date_gmt":"2022-11-08T12:28:25","guid":{"rendered":"https:\/\/www.vogelwarte.ch\/voegel-der-schweiz\/willow-warbler\/"},"modified":"2026-03-11T16:15:29","modified_gmt":"2026-03-11T15:15:29","slug":"willow-warbler","status":"publish","type":"voegel-der-schweiz","link":"https:\/\/www.vogelwarte.ch\/en\/birds-of-switzerland\/willow-warbler\/","title":{"rendered":"Willow Warbler"},"content":{"rendered":"","protected":false},"featured_media":127239,"template":"","afvs_foerdermassnahmen":[],"afvs_npa-handlungsebene":[],"afvs_lebensraum":[],"afvs_nahrung":[],"afvs_stakeholder":[],"afvs_npa-verantwortung":[],"lebensraum":[347,358],"nahrung":[363],"afvs_npa-dringlichkeit":[],"rote-liste-schweiz":[350],"vogelgruppe":[429],"class_list":["post-6501","voegel-der-schweiz","type-voegel-der-schweiz","status-publish","has-post-thumbnail","hentry","lebensraum-feuchtgebiete","lebensraum-wald","nahrung-insekten-und-spinnen","rote-liste-schweiz-verletzlich-vu","vogelgruppe-zweigsaenger"],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v28.3 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Vogelarten: Willow Warbler<\/title>\n<meta name=\"description\" content=\"The Willow Warbler and the Common Chiffchaff are so-called sibling species and look very similar. They are best distinguished by their song: The Willow Warbler\u2019s song sounds mournfully fluting. The pronounced migrant spends the winter south of the Sahara. Our country lies at the southern limit of its range. The Willow Warbler\u2019s main areas of distribution are northern wooded and bushy areas where it is one of the most widespread and abundant bird species. In April and May you can guess its frequency when passage migrants advertise their presence by singing in every garden, every cluster of trees and every wood.\" \/>\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\/willow-warbler\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Vogelarten: Willow Warbler\" \/>\n<meta property=\"og:description\" content=\"The Willow Warbler and the Common Chiffchaff are so-called sibling species and look very similar. They are best distinguished by their song: The Willow Warbler\u2019s song sounds mournfully fluting. The pronounced migrant spends the winter south of the Sahara. Our country lies at the southern limit of its range. The Willow Warbler\u2019s main areas of distribution are northern wooded and bushy areas where it is one of the most widespread and abundant bird species. In April and May you can guess its frequency when passage migrants advertise their presence by singing in every garden, every cluster of trees and every wood.\" \/>\n<meta property=\"og:url\" content=\"https:\/\/www.vogelwarte.ch\/en\/birds-of-switzerland\/willow-warbler\/\" \/>\n<meta property=\"og:site_name\" content=\"Swiss Ornithological Institute\" \/>\n<meta property=\"article:publisher\" content=\"https:\/\/www.facebook.com\/vogelwarte.ch\" \/>\n<meta property=\"article:modified_time\" content=\"2026-03-11T15:15:29+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/www.vogelwarte.ch\/wp-content\/uploads\/2026\/03\/4720_1.jpg\" \/>\n\t<meta property=\"og:image:width\" content=\"1600\" \/>\n\t<meta property=\"og:image:height\" content=\"1200\" \/>\n\t<meta property=\"og:image:type\" content=\"image\/jpeg\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:site\" content=\"@vogelwarte_ch\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\\\/\\\/schema.org\",\"@graph\":[{\"@type\":\"WebPage\",\"@id\":\"https:\\\/\\\/www.vogelwarte.ch\\\/en\\\/birds-of-switzerland\\\/willow-warbler\\\/\",\"url\":\"https:\\\/\\\/www.vogelwarte.ch\\\/en\\\/birds-of-switzerland\\\/willow-warbler\\\/\",\"name\":\"Vogelarten: Willow Warbler\",\"isPartOf\":{\"@id\":\"https:\\\/\\\/www.vogelwarte.ch\\\/en\\\/#website\"},\"primaryImageOfPage\":{\"@id\":\"https:\\\/\\\/www.vogelwarte.ch\\\/en\\\/birds-of-switzerland\\\/willow-warbler\\\/#primaryimage\"},\"image\":{\"@id\":\"https:\\\/\\\/www.vogelwarte.ch\\\/en\\\/birds-of-switzerland\\\/willow-warbler\\\/#primaryimage\"},\"thumbnailUrl\":\"https:\\\/\\\/www.vogelwarte.ch\\\/wp-content\\\/uploads\\\/2026\\\/03\\\/4720_1.jpg\",\"datePublished\":\"2022-11-08T12:28:25+00:00\",\"dateModified\":\"2026-03-11T15:15:29+00:00\",\"description\":\"The Willow Warbler and the Common Chiffchaff are so-called sibling species and look very similar. 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