{"id":1620,"date":"2012-01-04T14:28:14","date_gmt":"2012-01-04T13:28:14","guid":{"rendered":"http:\/\/audioblog.sonatura.com\/?p=1620"},"modified":"2012-01-09T23:36:41","modified_gmt":"2012-01-09T22:36:41","slug":"bruant-des-roseaux-des-notes-qui-denotent","status":"publish","type":"post","link":"https:\/\/audioblog.sonatura.com\/?p=1620","title":{"rendered":"Bruant des roseaux : des notes … qui d\u00e9notent"},"content":{"rendered":"

Perch\u00e9 \u00e0 la pointe d\u2019un roseau, d\u2019un saule ou d\u2019un autre perchoir dominant sa phragmitaie, le Bruant des roseaux lance ses courtes phrases \u2013 quelques notes, mais parfois une dizaine \u2013 bien audibles. Ces notes, suraigu\u00ebs, s\u2019inscrivent aussi dans une bande de fr\u00e9quence assez large. Chaque m\u00e2le introduit sa phrase par une note caract\u00e9ristique, \u00e0 laquelle il en ajoute d\u2019autres combin\u00e9es de diff\u00e9rentes mani\u00e8res.<\/p>\n

Dans l\u2019enregistrement pr\u00e9sent\u00e9 ici, une note r\u00e9p\u00e9t\u00e9e quatre \u00e0 six fois selon la phrase se distingue des autres : sa structure est plus simple, son enveloppe plus \u00e9troite, sa tonalit\u00e9 beaucoup moins aigu\u00eb et, comme le montre sa modulation d\u2019amplitude, elle est aussi tr\u00e8s discr\u00e8te. S\u2019agirait-il d\u2019une imitation d\u2019un cri et, dans ce cas, de quelle esp\u00e8ce ?<\/p>\n

Ce m\u00e2le n\u2019\u00e9tait pas le seul \u00e0 \u00e9mettre ce type de note, mais cette particularit\u00e9 vocale semble peu r\u00e9pandue. Elle s\u2019observe cependant dans d\u2019autres r\u00e9gions d\u2019Europe (voir le sonagramme\u00a0 d\u2019un enregistrement r\u00e9alis\u00e9 par Matessi et al.<\/em> 2000). Comme sa port\u00e9e est faible, il est possible qu\u2019elle \u00e9chappe \u00e0 certaines prises de sons.<\/p>\n

\"\"<\/a>

Spectrogrammes d\u2019une phrase de Bruant des roseaux Emberiza schoeniclus enregistr\u00e9 \u00e0 St Georges (B) le 9 juillet 2009. En haut, le sonagramme ; en bas, la modulation d\u2019amplitude. La note \u00ab qui d\u00e9note \u00bb forme un trille, peu marqu\u00e9, juste avant la derni\u00e8re note (copyright M. Metzmacher).<\/p><\/div>\n

Phrase de Bruant des roseaux (Reed Bunting)<\/a><\/p>\n

http:\/\/audioblog.sonatura.com\/wp-content\/uploads\/2012\/01\/brdr_stg_9jt2009.mp3<\/a><\/audio><\/div>

Podcast: Play in new window<\/a><\/p>\n

–<\/p>\n

R\u00e9f\u00e9rence :<\/strong><\/p>\n

Matessi, G. ; Pilastro, A. & Marin, G. 2000. Variation in quantitative properties of song among European populations of reed bunting (Emberiza schoeniclus<\/em>) with respect to bill morphology. Can. J. Zool. <\/em>78 (3) : 428\u2013437.<\/p>\n","protected":false},"excerpt":{"rendered":"

Perch\u00e9 \u00e0 la pointe d\u2019un roseau, d\u2019un saule ou d\u2019un autre perchoir dominant sa phragmitaie, le Bruant des roseaux lance ses courtes phrases \u2013 quelques notes, mais parfois une dizaine \u2013 bien audibles. Ces notes, suraigu\u00ebs, s\u2019inscrivent aussi dans une … finish reading Bruant des roseaux : des notes … qui d\u00e9notent<\/a><\/p>\n","protected":false},"author":13,"featured_media":0,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[9,12],"tags":[],"class_list":["post-1620","post","type-post","status-publish","format-standard","hentry","category-bioacoustique","category-les-solistes"],"_links":{"self":[{"href":"https:\/\/audioblog.sonatura.com\/index.php?rest_route=\/wp\/v2\/posts\/1620","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/audioblog.sonatura.com\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/audioblog.sonatura.com\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/audioblog.sonatura.com\/index.php?rest_route=\/wp\/v2\/users\/13"}],"replies":[{"embeddable":true,"href":"https:\/\/audioblog.sonatura.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=1620"}],"version-history":[{"count":23,"href":"https:\/\/audioblog.sonatura.com\/index.php?rest_route=\/wp\/v2\/posts\/1620\/revisions"}],"predecessor-version":[{"id":1649,"href":"https:\/\/audioblog.sonatura.com\/index.php?rest_route=\/wp\/v2\/posts\/1620\/revisions\/1649"}],"wp:attachment":[{"href":"https:\/\/audioblog.sonatura.com\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=1620"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/audioblog.sonatura.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=1620"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/audioblog.sonatura.com\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=1620"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}