{"id":66581,"date":"2022-04-14T12:59:47","date_gmt":"2022-04-14T16:59:47","guid":{"rendered":"http:\/\/understood-jellybeans.flywheelsites.com\/field-notes-swallow-roosts\/"},"modified":"2022-09-29T16:08:46","modified_gmt":"2022-09-29T20:08:46","slug":"field-notes-swallow-roosts","status":"publish","type":"page","link":"https:\/\/naturecanada.ca\/fr\/field-notes-swallow-roosts\/","title":{"rendered":"Notes de terrain &#8211; les rassemblements nocturnes des hirondelles"},"content":{"rendered":"<div class=\"wpb-content-wrapper\"><p>[vc_row full_width=&#8221;stretch_row&#8221; video_bg=&#8221;yes&#8221; video_bg_url=&#8221;https:\/\/www.youtube.com\/watch?v=8RQ5vCBpLXM&#8221; css=&#8221;.vc_custom_1649874628032{margin-top: -100px !important;padding-top: 400px !important;background-position: center !important;background-repeat: no-repeat !important;background-size: cover !important;}&#8221;][vc_column][\/vc_column][\/vc_row][vc_row full_width=&#8221;stretch_row&#8221; css=&#8221;.vc_custom_1611948022020{background-position: center !important;background-repeat: no-repeat !important;background-size: cover !important;}&#8221; el_class=&#8221;black-mask&#8221;][vc_column css=&#8221;.vc_custom_1611993095297{padding-top: 0px !important;}&#8221;][\/vc_column][\/vc_row][vc_row css=&#8221;.vc_custom_1611993065873{padding-top: 0px !important; display:none;}&#8221;][vc_column css=&#8221;.vc_custom_1611993081080{padding-top: 0px !important;}&#8221;][\/vc_column][\/vc_row][vc_row full_width=&#8221;stretch_row&#8221; css=&#8221;.vc_custom_1611993052839{padding-top: 0px !important;background-color: #2e2e2e !important;background-position: center !important;background-repeat: no-repeat !important;background-size: cover !important;}&#8221;][vc_column][vc_column_text]<\/p>\n<h1 style=\"color: white;\">Notes de terrain &#8211; les rassemblements nocturnes des hirondelles<\/h1>\n<p><span class=\"lead\" style=\"color: white;\">Un tourbillon d\u2019oiseaux! Voir des milliers d\u2019hirondelles retourner \u00e0 leur lieu de repos nocturne est une exp\u00e9rience inoubliable. Dans le cadre de la campagne Sauvons les hirondelles, Nature Canada travaille avec ses partenaires pour surveiller et prot\u00e9ger les rassemblements de ces oiseaux.<\/span>[\/vc_column_text][\/vc_column][\/vc_row][vc_row gap=&#8221;10&#8243; equal_height=&#8221;yes&#8221; css=&#8221;.vc_custom_1649879832188{padding-top: 5% !important;padding-bottom: 8% !important;}&#8221;][vc_column offset=&#8221;vc_col-lg-8 vc_col-md-12 vc_col-xs-12&#8243;][vc_column_text]<\/p>\n<h2>\u00c0 propos du programme<\/h2>\n<p><span style=\"font-weight: 400;\">Le cr\u00e9puscule enveloppe le marais de Dunnville, dans le sud-ouest de l\u2019Ontario.<\/span> <span style=\"font-weight: 400;\">Un balbuzard p\u00eacheur observe le marais du haut d\u2019un arbre mort, et l\u2019eau lisse comme du verre s\u2019agite au passage de petits poissons.<\/span> <span style=\"font-weight: 400;\">Deux cano\u00e9istes, glissant parmi les quenouilles, commencent \u00e0 sentir la pr\u00e9sence des moustiques.<\/span> <span style=\"font-weight: 400;\">Soudain, des dizaines d\u2019hirondelles de diff\u00e9rentes esp\u00e8ces surgissent et tourbillonnent au-dessus de l\u2019eau. Bient\u00f4t, elles sont des milliers.<\/span><\/p>\n<p><span style=\"font-weight: 400;\">\u00a0<\/span><span style=\"font-weight: 400;\">\u00ab\u00a0C\u2019est \u00e0 couper le souffle.\u00a0\u00bb<\/span> <span style=\"font-weight: 400;\">C\u2019est ainsi que Ted Cheskey, naturaliste en chef \u00e0 Nature Canada, d\u00e9crit ce spectacle de vingt \u00e0 trente mille hirondelles retournant en coup de vent \u00e0 leur lieu de repos nocturne. \u00ab\u00a0Si plus de gens pouvaient assister \u00e0 cette sc\u00e8ne, dit Ted, ils r\u00e9aliseraient \u00e0 quel point ces rassemblements sont \u00e9tonnants et combien il est essentiel de les prot\u00e9ger.\u00a0\u00bb<\/span>[\/vc_column_text][vc_raw_html]JTNDaWZyYW1lJTIwd2lkdGglM0QlMjI1NjAlMjIlMjBoZWlnaHQlM0QlMjI0MTUlMjIlMjBzcmMlM0QlMjJodHRwcyUzQSUyRiUyRnd3dy55b3V0dWJlLmNvbSUyRmVtYmVkJTJGc2ZXMTZ3NlZfRzQlMjIlMjB0aXRsZSUzRCUyMllvdVR1YmUlMjB2aWRlbyUyMHBsYXllciUyMiUyMGZyYW1lYm9yZGVyJTNEJTIyMCUyMiUyMGFsbG93JTNEJTIyYWNjZWxlcm9tZXRlciUzQiUyMGF1dG9wbGF5JTNCJTIwY2xpcGJvYXJkLXdyaXRlJTNCJTIwZW5jcnlwdGVkLW1lZGlhJTNCJTIwZ3lyb3Njb3BlJTNCJTIwcGljdHVyZS1pbi1waWN0dXJlJTIyJTIwYWxsb3dmdWxsc2NyZWVuJTNFJTNDJTJGaWZyYW1lJTNF[\/vc_raw_html][vc_column_text]<\/p>\n<h2>Pourquoi nous accomplissons ce travail<\/h2>\n<p><span style=\"font-weight: 400;\">Les hirondelles se rassemblent la nuit dans des lieux de repos qui peuvent abriter de quelques centaines \u00e0 plusieurs centaines de milliers d\u2019individus chacun. Ces oiseaux se rassemblent dans ces lieux de repos au cr\u00e9puscule et se dispersent le lendemain avant le lever du soleil.<\/span><span style=\"font-weight: 400;\">\u00a0<\/span><\/p>\n<p><span style=\"font-weight: 400;\">Ce rituel prend forme \u00e0 la fin de l\u2019\u00e9t\u00e9, apr\u00e8s la fin de la p\u00e9riode de reproduction.<\/span> <span style=\"font-weight: 400;\">Il constitue une \u00e9tape critique dans le cycle annuel des esp\u00e8ces d\u2019hirondelles. On pense que les lieux de repos offrent aux hirondelles une certaine s\u00e9curit\u00e9 contre les pr\u00e9dateurs en raison du grand nombre d\u2019individus rassembl\u00e9s. <\/span><span style=\"font-weight: 400;\">\u00a0<\/span><span style=\"font-weight: 400;\">Pendant environ un mois, le temps que durent ces rassemblements, ces habitats permettent aux oiseaux de se gaver d\u2019insectes et de se pr\u00e9parer \u00e0 leurs migrations \u00e9piques vers leurs aires lieux d\u2019hivernage.<\/span><span style=\"font-weight: 400;\">\u00a0<\/span><\/p>\n<p><span style=\"font-weight: 400;\">Ces rassemblements se trouvent g\u00e9n\u00e9ralement dans des zones humides telles que les marais et les mar\u00e9cages (bien que des rassemblements plus petits puissent se trouver dans des champs de cultures hautes comme le ma\u00efs ou la canne \u00e0 sucre). La protection de ces lieux est vitale, surtout en Ontario, o\u00f9 les six esp\u00e8ces d\u2019hirondelles pr\u00e9sentes ont vu leur population diminuer de moiti\u00e9.\u00a0<\/span>[\/vc_column_text][vc_raw_html]JTNDYSUyMG5hbWUlM0QlMjJiYWNrdG90b3AlMjIlM0UlM0MlMkZhJTNF[\/vc_raw_html][\/vc_column][vc_column offset=&#8221;vc_col-lg-4 vc_col-md-12 vc_hidden-md vc_hidden-sm vc_col-xs-12 vc_hidden-xs&#8221;][\/vc_column][\/vc_row][vc_row full_width=&#8221;stretch_row&#8221; css=&#8221;.vc_custom_1649879956518{margin-bottom: 0px !important;padding-top: 5% !important;padding-bottom: 7% !important;background-color: #f0f0f0 !important;}&#8221;][vc_column][vc_column_text]<\/p>\n<h2 style=\"font-family: 'Playfair Display', serif; text-transform: lowercase; font-weight: 900; color: #808080;\">Cliquez pour vous diriger dans la section <i class=\"fas fa-leaf\"><\/i><\/h2>\n<p>[\/vc_column_text][vc_row_inner equal_height=&#8221;yes&#8221; content_placement=&#8221;top&#8221; css=&#8221;.vc_custom_1611951187148{margin-top: 0px !important;margin-bottom: 0px !important;padding-top: 0px !important;padding-right: 0px !important;padding-bottom: 0px !important;padding-left: 0px !important;}&#8221; 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width=&#8221;1\/2&#8243; offset=&#8221;vc_col-lg-3 vc_col-md-3 vc_col-xs-12&#8243;][vc_raw_html css=&#8221;.vc_custom_1653597879300{padding-right: 0px !important;padding-left: 0px !important;}&#8221;]JTNDYSUyMGhyZWYlM0QlMjIlMjNzZWN0aW9uNCUyMiUzRSUwQSUzQ2g0JTNFUmVzc291cmNlcyUzQyUyRmg0JTNFJTBBVm91cyUyMHNvdWhhaXRleiUyMGVuJTIwc2F2b2lyJTIwcGx1cyUyMHN1ciUyMGNlcnRhaW5lcyUyMGRlcyUyMG1lcnZlaWxsZXVzZXMlMjBlc3AlQzMlQThjZXMlMjBxdWUlMjBsJUUyJTgwJTk5b24lMjBwZXV0JTIwdHJvdXZlciUyMGRhbnMlMjBsZXMlMjByYXNzZW1ibGVtZW50cyUyMGRlcyUyMGhpcm9uZGVsbGVzJTIwZGUlMjBsYSUyMHAlQzMlQTlyaW9kZSUyMHBvc3RudXB0aWFsZSUyMCUzRiUyMENsaXF1ZXolMjBpY2kuJTNDJTJGYSUzRQ==[\/vc_raw_html][\/vc_column_inner][\/vc_row_inner][vc_raw_html]JTNDYSUyMG5hbWUlM0QlMjJzZWN0aW9uMSUyMiUzRSUzQyUyRmElM0U=[\/vc_raw_html][\/vc_column][\/vc_row][vc_row full_width=&#8221;stretch_row&#8221; css=&#8221;.vc_custom_1649949493301{background-image: url(https:\/\/naturecanada.ca\/wp-content\/uploads\/2022\/04\/field-notes-swallow.jpg?id=66170) !important;background-position: center !important;background-repeat: no-repeat !important;background-size: cover !important;}&#8221; el_id=&#8221;section1&#8243; el_class=&#8221;sectionhead&#8221;][vc_column width=&#8221;1\/2&#8243; css=&#8221;.vc_custom_1649950350560{background-color: rgba(46,46,46,0.8) !important;*background-color: rgb(46,46,46) !important;}&#8221; el_id=&#8221;sectioncopy&#8221;][vc_row_inner css=&#8221;.vc_custom_1611951857177{margin-top: 0px !important;padding-top: 10% !important;padding-right: 4% !important;padding-bottom: 10% !important;padding-left: 4% !important;}&#8221;][vc_column_inner][vc_column_text css=&#8221;.vc_custom_1653598396304{padding-bottom: 50px !important;}&#8221;]<\/p>\n<h1 style=\"color: white; padding-bottom: 3%;\">L\u2019importance des hirondelles<\/h1>\n<p><span class=\"lead\" style=\"color: white; font-size: 20px; line-height: 30px;\">Comme d\u2019autres oiseaux, les hirondelles sont des esp\u00e8ces indicatrices : facilement observables et sensibles aux modifications que subissent leurs habitats, elles peuvent nous en dire long sur la sant\u00e9 de l\u2019environnement. <\/span>[\/vc_column_text][\/vc_column_inner][\/vc_row_inner][\/vc_column][vc_column width=&#8221;1\/2&#8243; el_id=&#8221;sectionimg&#8221;][\/vc_column][\/vc_row][vc_row equal_height=&#8221;yes&#8221; content_placement=&#8221;middle&#8221; css=&#8221;.vc_custom_1649433525727{padding-top: 100px !important;padding-bottom: 100px !important;}&#8221;][vc_column width=&#8221;1\/2&#8243; css=&#8221;.vc_custom_1649433492895{margin-bottom: 0px !important;padding-bottom: 0px !important;}&#8221;][vc_raw_html css=&#8221;.vc_custom_1653597953246{margin-bottom: 0px !important;padding-bottom: 0px !important;}&#8221;]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[\/vc_raw_html][\/vc_column][vc_column width=&#8221;1\/2&#8243;][vc_column_text css=&#8221;.vc_custom_1653598011306{margin-bottom: 0px !important;padding-bottom: 0px !important;}&#8221;]<strong>Les hirondelles jouent un r\u00f4le important dans divers \u00e9cosyst\u00e8mes en consommant des insectes volants, notamment des parasites agricoles.<\/strong> <span style=\"font-weight: 400;\">Et bien s\u00fbr, en tant que voltigeuses gracieuses et acrobatiques, elles ajoutent une touche de couleur et d\u2019\u00e9merveillement \u00e0 nos vies!<\/span><\/p>\n<p><span style=\"font-weight: 400;\">Malheureusement, alors que les populations d\u2019insectes diminuent \u00e0 l\u2019\u00e9chelle mondiale en raison de l\u2019utilisation de pesticides et des changements climatiques, les hirondelles sont de plus en plus menac\u00e9es.<\/span><span style=\"font-weight: 400;\"> Au d\u00e9but de 2022, certaines esp\u00e8ces d&#8217;hirondelles (comme l&#8217;hirondelle noire) ne sont toujours pas prot\u00e9g\u00e9es ou inscrites sur la liste de la <\/span><i><span style=\"font-weight: 400;\">Loi sur les esp\u00e8ces en p\u00e9ril du Canada<\/span><\/i><span style=\"font-weight: 400;\">, m\u00eame si l&#8217;esp\u00e8ce a perdu plus de la moiti\u00e9 de sa population \u00e0 l&#8217;est de la Saskatchewan, et m\u00eame tragiquement\u00a0 plus de 98 % \u00e0 l&#8217;est de l&#8217;Ontario<\/span><span style=\"font-weight: 400;\">.<\/span>[\/vc_column_text][\/vc_column][vc_column][vc_column_text css=&#8221;.vc_custom_1653598721582{padding-top: 70px !important;}&#8221;]<\/p>\n<p style=\"text-align: center; font-size: 18px;\"><strong><a href=\"#backtotop\">Haut de page <\/a> <i class=\"fas fa-sort-up\"><\/i><\/strong><\/p>\n<p>[\/vc_column_text][\/vc_column][\/vc_row][vc_row full_width=&#8221;stretch_row&#8221; equal_height=&#8221;yes&#8221; css=&#8221;.vc_custom_1649949441681{background-image: url(https:\/\/naturecanada.ca\/wp-content\/uploads\/2022\/04\/field-notes-swallow-roosts.jpg?id=66164) !important;background-position: center !important;background-repeat: no-repeat !important;background-size: cover !important;}&#8221; el_id=&#8221;section2&#8243; el_class=&#8221;sectionhead&#8221;][vc_column width=&#8221;1\/2&#8243; css=&#8221;.vc_custom_1649950385201{padding-top: 15% !important;padding-right: 6% !important;padding-bottom: 10% !important;padding-left: 6% !important;background-color: rgba(46,46,46,0.8) !important;*background-color: rgb(46,46,46) !important;}&#8221; el_id=&#8221;sectioncopy&#8221;][vc_column_text]<\/p>\n<h1 style=\"color: white; margin-bottom: 3%;\">Temp\u00eate dans le ciel : les rassemblements des hirondelles et les radars m\u00e9t\u00e9orologiques<\/h1>\n<p class=\"lead\" style=\"color: white; font-size: 20px; line-height: 30px;\">Les rassemblements des hirondelles ne prennent forme qu\u2019un mois par an, apr\u00e8s la p\u00e9riode de reproduction, et ne se trouvent pas toujours au m\u00eame endroit. Il peut \u00eatre difficile de les trouver, et c\u2019est l\u00e0 que les radars m\u00e9t\u00e9orologiques entrent en jeu.<\/p>\n<p>[\/vc_column_text][\/vc_column][vc_column width=&#8221;1\/2&#8243; el_id=&#8221;sectionimg&#8221;][\/vc_column][\/vc_row][vc_row equal_height=&#8221;yes&#8221; content_placement=&#8221;middle&#8221; css=&#8221;.vc_custom_1649432938447{padding-top: 5% !important;padding-bottom: 8% !important;}&#8221;][vc_column width=&#8221;1\/2&#8243;][vc_raw_html]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[\/vc_raw_html][\/vc_column][vc_column width=&#8221;1\/2&#8243;][vc_column_text]De nombreux rassemblements sont si grands que le d\u00e9part des oiseaux \u00e0 l\u2019aube peut \u00eatre per\u00e7u comme un nuage en rapide expansion. L\u2019un des membres du personnel de Nature Canada a rep\u00e9r\u00e9 une forme de \u00ab beignet \u00bb ou de \u00ab croissant \u00bb sur l\u2019imagerie radar et en a d\u00e9duit qu\u2019il s\u2019agissait d\u2019un lieu constituant un rassemblement. Suivre les hirondelles sur terre n\u2019est pas une t\u00e2che facile, car elles volent tr\u00e8s vite, mais nous pouvons maintenant utiliser les radars m\u00e9t\u00e9orologiques accessibles au public pour suivre leurs d\u00e9placements.[\/vc_column_text][vc_raw_html css=&#8221;.vc_custom_1653598078612{margin-bottom: 0px !important;padding-bottom: 0px !important;}&#8221;]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[\/vc_raw_html][\/vc_column][vc_column][vc_column_text css=&#8221;.vc_custom_1653598708608{padding-top: 50px !important;}&#8221;]<\/p>\n<p style=\"text-align: center; font-size: 18px;\"><strong><a href=\"#backtotop\">Haut de page <\/a> <i class=\"fas fa-sort-up\"><\/i><\/strong><\/p>\n<p>[\/vc_column_text][\/vc_column][\/vc_row][vc_row full_width=&#8221;stretch_row&#8221; equal_height=&#8221;yes&#8221; css=&#8221;.vc_custom_1649949400223{background-image: url(https:\/\/naturecanada.ca\/wp-content\/uploads\/2022\/04\/field-notes-dunville-marsh.jpg?id=66172) !important;background-position: center !important;background-repeat: no-repeat !important;background-size: cover !important;}&#8221; el_class=&#8221;sectionhead&#8221; el_id=&#8221;section3&#8243;][vc_column width=&#8221;1\/2&#8243; css=&#8221;.vc_custom_1649952067441{padding-top: 15% !important;padding-right: 6% !important;padding-bottom: 10% !important;padding-left: 6% !important;background-color: rgba(46,46,46,0.8) !important;*background-color: rgb(46,46,46) !important;}&#8221; el_id=&#8221;sectioncopy&#8221;][vc_column_text]<\/p>\n<h1 style=\"color: white; padding-bottom: 3%;\">Au c\u0153ur d\u2019un rassemblement des hirondelles dans le marais de Dunnville<\/h1>\n<p class=\"lead\" style=\"color: white; font-size: 20px; line-height: 30px;\">M\u00e9langez de la terre et de l\u2019eau, ajoutez un peu de mati\u00e8re visqueuse fertile, et vous obtiendrez une richesse biologique impressionnante. Les huit kilom\u00e8tres carr\u00e9s du marais de Dunnville, y compris les chenaux de rivi\u00e8re qui s\u2019y trouvent, comportent de nombreux habitats qui abritent diverses esp\u00e8ces en p\u00e9ril.<\/p>\n<p>[\/vc_column_text][\/vc_column][vc_column width=&#8221;1\/2&#8243; el_id=&#8221;sectionimg&#8221;][\/vc_column][\/vc_row][vc_row css=&#8221;.vc_custom_1611954058447{padding-top: 5% !important;padding-bottom: 5% !important;}&#8221;][vc_column][vc_column_text]<strong>\u00a0En plus de favoriser grandement la biodiversit\u00e9, les zones humides comme ce marais fournissent des \u00ab\u00a0services \u00e9cosyst\u00e9miques\u00a0\u00bb essentiels, notamment en r\u00e9gulant le d\u00e9bit de l\u2019eau, en limitant l\u2019\u00e9rosion et en purifiant l\u2019eau.<\/strong><\/p>\n<p><span style=\"font-weight: 400;\">Depuis 2017, le personnel de Nature Canada effectue un suivi annuel du site de repos communautaire nocturne (sauf en 2020, \u00e0 cause des consignes li\u00e9es \u00e0 la COVID-19). Nos constatations sugg\u00e8rent que le site abrite les six esp\u00e8ces d\u2019hirondelles pr\u00e9sentes en Ontario. Cela en fait un habitat particuli\u00e8rement important, puisque ces esp\u00e8ces connaissent un d\u00e9clin rapide depuis les ann\u00e9es 1970.<\/span><\/p>\n<p><span style=\"font-weight: 400;\">Le marais de Dunnville se trouve sur les terres traditionnelles et non c\u00e9d\u00e9es des Six Nations ainsi que celles de la Premi\u00e8re Nation des Mississaugas de Credit. Il appartient en partie \u00e0 l\u2019Office de protection de la nature de la rivi\u00e8re Grand, mais certaines zones contiennent \u00e9galement des propri\u00e9t\u00e9s priv\u00e9es. M\u00eame si le marais est actuellement class\u00e9 comme \u00ab\u00a0terre humide d\u2019importance provinciale\u00a0\u00bb, cela ne le prot\u00e8ge pas des pressions exerc\u00e9es par le d\u00e9veloppement, des perturbations affectant les habitats ou de la pollution pr\u00e9sente en amont. La pr\u00e9servation de ce site de repos est cruciale pour la survie de dizaines de milliers d\u2019hirondelles.\u00a0<\/span>[\/vc_column_text][vc_raw_html]JTNDYSUyMG5hbWUlM0QlMjJzZWN0aW9uNCUyMiUzRSUzQyUyRmElM0U=[\/vc_raw_html][vc_column_text css=&#8221;.vc_custom_1653598700488{padding-top: 0px !important;}&#8221;]<\/p>\n<p style=\"text-align: center; font-size: 18px;\"><strong><a href=\"#backtotop\">Haut de page <\/a><\/strong> <i class=\"fas fa-sort-up\"><\/i><\/p>\n<p>[\/vc_column_text][\/vc_column][\/vc_row][vc_row full_width=&#8221;stretch_row&#8221; equal_height=&#8221;yes&#8221; css=&#8221;.vc_custom_1649949421960{margin-bottom: 5% !important;background-image: url(https:\/\/naturecanada.ca\/wp-content\/uploads\/2022\/04\/bank-swallows-roosting-dunnville-marsh.jpg?id=66174) !important;background-position: center !important;background-repeat: no-repeat !important;background-size: cover !important;}&#8221; el_id=&#8221;section4&#8243; el_class=&#8221;sectionhead&#8221;][vc_column width=&#8221;1\/2&#8243; css=&#8221;.vc_custom_1649952052709{padding-top: 15% !important;padding-right: 6% !important;padding-bottom: 10% !important;padding-left: 6% !important;background-color: rgba(46,46,46,0.8) !important;*background-color: rgb(46,46,46) !important;}&#8221; el_id=&#8221;sectioncopy&#8221;][vc_column_text]<\/p>\n<h1 style=\"color: white; padding-bottom: 3%;\">Sauvons les hirondelles \u2013 Ressources<\/h1>\n<p class=\"lead\" style=\"color: white; font-size: 20px; line-height: 30px;\">Gr\u00e2ce au g\u00e9n\u00e9reux soutien financier de la Fondation Trillium de l\u2019Ontario, la campagne Sauvons les hirondelles vise \u00e0 amener les collectivit\u00e9s et les citoyens \u00e0 agir en faveur de la protection des populations d\u2019hirondelles en d\u00e9clin rapide et menac\u00e9es en Ontario.<\/p>\n<p>[\/vc_column_text][\/vc_column][vc_column width=&#8221;1\/2&#8243; el_id=&#8221;sectionimg&#8221;][\/vc_column][\/vc_row][vc_row][vc_column][vc_column_text]<span style=\"font-weight: 400;\">Vous souhaitez en savoir plus sur certaines des merveilleuses esp\u00e8ces que l\u2019on peut trouver dans les rassemblements des hirondelles de la p\u00e9riode postnuptiale? Cliquez sur les liens ci-dessous pour consulter des rapports et des articles (en anglais) \u00e0 ce sujet\u00a0:<\/span><\/p>\n<ul>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><a href=\"https:\/\/naturecanada.ca\/animals\/about-purple-martins\/?\" target=\"_blank\" rel=\"noopener\"><span style=\"font-weight: 400;\">Hirondelle noire<\/span><\/a><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><a href=\"https:\/\/naturecanada.ca\/news\/blog\/the-barn-swallow\/#:~:text=The%20Barn%20Swallow%20(Hirundo%20rustica,barns%2C%20bridges%20and%20other%20structures.\" target=\"_blank\" rel=\"noopener\"><span style=\"font-weight: 400;\">Hirondelle rustique<\/span><\/a><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><a href=\"https:\/\/naturecanada.ca\/wp-content\/uploads\/2019\/01\/Bank-Swallow-Final-BMP.pdf?\" target=\"_blank\" rel=\"noopener\"><span style=\"font-weight: 400;\">Hirondelle de rivage<\/span><\/a><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><a href=\"https:\/\/naturecanada.ca\/wp-content\/uploads\/2019\/01\/Tree-Swallow-Final-BMP.pdf?\" target=\"_blank\" rel=\"noopener\"><span style=\"font-weight: 400;\">Hirondelle bicolore<\/span><\/a><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><a href=\"https:\/\/naturecanada.ca\/wp-content\/uploads\/2019\/01\/Cliff-Swallow-Final-BMP.pdf?\" target=\"_blank\" rel=\"noopener\"><span style=\"font-weight: 400;\">Hirondelle \u00e0 front blanc<\/span><\/a><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><a href=\"https:\/\/naturecanada.ca\/download\/bank-swallow-northern-rough-winged-swallow-bmp\/?\" target=\"_blank\" rel=\"noopener\"><span style=\"font-weight: 400;\">Hirondelle \u00e0 ailes h\u00e9riss\u00e9es<\/span><\/a><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><a href=\"https:\/\/www.audubon.org\/field-guide\/bird\/violet-green-swallow\" target=\"_blank\" rel=\"noopener\"><span style=\"font-weight: 400;\">Hirondelle \u00e0 face blanche<\/span><\/a><\/li>\n<\/ul>\n<p><span style=\"font-weight: 400;\">Nature Canada effectue depuis plusieurs ann\u00e9es un suivi des rassemblements de la p\u00e9riode postnuptiale ainsi que des recherches pour mieux les pr\u00e9server. Vous pouvez consulter les rapports (en anglais) que nous avons \u00e9tablis \u00e0 ce sujet pour les ann\u00e9es <\/span><a href=\"https:\/\/naturecanada.ca\/wp-content\/uploads\/2019\/10\/Roost-monitoring-2018-Final-Report.pdf?\" target=\"_blank\" rel=\"noopener\"><span style=\"font-weight: 400;\">2018<\/span><\/a><span style=\"font-weight: 400;\"> et <\/span><a href=\"https:\/\/naturecanada.ca\/wp-content\/uploads\/2021\/04\/Save-Our-Swallows-2019-Roost-Report.pdf?\" target=\"_blank\" rel=\"noopener\"><span style=\"font-weight: 400;\">2019<\/span><\/a><span style=\"font-weight: 400;\">. <\/span>[\/vc_column_text][vc_column_text css=&#8221;.vc_custom_1653599188207{padding-top: 50px !important;}&#8221;]<\/p>\n<p style=\"text-align: center; font-size: 18px;\"><a href=\"#backtotop\"><strong>Haut de page <\/strong><\/a> <i class=\"fas fa-sort-up\"><\/i><\/p>\n<p>[\/vc_column_text][\/vc_column][\/vc_row]<\/p>\n<\/div>","protected":false},"excerpt":{"rendered":"<p>Dans le cadre de la campagne Sauvons les hirondelles, Nature Canada travaille avec ses partenaires pour surveiller et prot\u00e9ger les rassemblements de ces oiseaux.<\/p>\n","protected":false},"author":133,"featured_media":66182,"parent":0,"menu_order":31,"comment_status":"closed","ping_status":"closed","template":"page-blank.php","meta":{"_acf_changed":false,"footnotes":""},"class_list":["post-66581","page","type-page","status-publish","has-post-thumbnail","hentry"],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.0 - 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