{"id":5909,"date":"2018-01-15T00:00:00","date_gmt":"2018-01-15T00:00:00","guid":{"rendered":"http:\/\/4vultures.org\/blog\/bearded-vulture-eggs-pyrenees\/"},"modified":"2018-01-15T00:00:00","modified_gmt":"2018-01-15T00:00:00","slug":"bearded-vulture-eggs-pyrenees","status":"publish","type":"post","link":"https:\/\/4vultures.org\/es\/blog\/bearded-vulture-eggs-pyrenees\/","title":{"rendered":"New paper: eggshell thickness from bearded vulture eggs from the Pyrenees decreased abruptly after 2004"},"content":{"rendered":"<div id='gallery-1' class='gallery galleryid-5909 gallery-columns-3 gallery-size-large'><figure class='gallery-item'>\n\t\t\t<div class='gallery-icon landscape'>\n\t\t\t\t<a href='https:\/\/4vultures.org\/wp-content\/uploads\/2019\/11\/gallery_1310.jpg'><img fetchpriority=\"high\" decoding=\"async\" width=\"670\" height=\"377\" src=\"https:\/\/4vultures.org\/wp-content\/uploads\/2019\/11\/gallery_1310.jpg\" class=\"attachment-large size-large\" alt=\"\" srcset=\"https:\/\/4vultures.org\/wp-content\/uploads\/2019\/11\/gallery_1310.jpg 670w, https:\/\/4vultures.org\/wp-content\/uploads\/2019\/11\/gallery_1310-300x169.jpg 300w\" sizes=\"(max-width: 670px) 100vw, 670px\" \/><\/a>\n\t\t\t<\/div><\/figure>\n\t\t<\/div>\n\n<p> Shell thickness of bearded vulture eggs from the period 1989 to 2012 (collected from nests after breeding failure and\/or fledging) was compared with eggs collected from 1858 to 1911 (and now held in European museums) by Mauro Hernandez and colleagues. Their results, just published on Science of the Total Environment, showed there was a decrease in eggshell thickness in eggs collected since 2001, more evident even from 2004, suggesting an abrupt loss of egg quality.<\/p>\n<p> The authors suggest this may be related to extrinsic factors such as food availability and quality \u2013 either due to density-dependent competition for food resources or the impact of the sudden changes in food availability due to sanitary regulations between 2006 and 2011 \u2013 now fortunately reversed with scavenger-friendly policies in place again.<\/p>\n<p> The good news was that organochlorine pesticides and polychlorinated biphenyls levels were found in low levels, suggesting the impacts of this contamination seem to be a thing of the past.<\/p>\n<p> You can download the full paper below.<\/p>\n<p> Photo: VCF<\/p>\n<p> <a href=\"\/es\/app\/download\/9274487085\/Hern%C3%A1ndez+et+al+2018+Science+of+the+Total+Environment.pdf\/?t=1516017826\"> <img decoding=\"async\" src=\"https:\/\/assets.jimstatic.com\/s\/img\/cc\/icons\/pdf.png\" alt=\"Download\" \/> <\/a> Decrease in eggshell thickness from bearded vulture eggs from the Pyrenees Hern\u00e1ndez et al 2018 Science of the Tota Adobe Acrobat Document 513.3 KB <a href=\"\/es\/app\/download\/9274487085\/Hern%C3%A1ndez+et+al+2018+Science+of+the+Total+Environment.pdf\/?t=1516017826\">Download<\/a> <\/p>","protected":false},"excerpt":{"rendered":"<p>Shell thickness of bearded vulture eggs from the period 1989 to 2012 (collected from nests after breeding failure and\/or fledging) was compared with eggs collected from 1858 to 1911 (and now held in European museums) by Mauro Hernandez and colleagues. Their results, just published on Science of the Total Environment, showed there was a decrease [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_uag_custom_page_level_css":"","site-sidebar-layout":"default","site-content-layout":"","ast-site-content-layout":"default","site-content-style":"default","site-sidebar-style":"default","ast-global-header-display":"","ast-banner-title-visibility":"","ast-main-header-display":"","ast-hfb-above-header-display":"","ast-hfb-below-header-display":"","ast-hfb-mobile-header-display":"","site-post-title":"","ast-breadcrumbs-content":"","ast-featured-img":"","footer-sml-layout":"","ast-disable-related-posts":"","theme-transparent-header-meta":"","adv-header-id-meta":"","stick-header-meta":"","header-above-stick-meta":"","header-main-stick-meta":"","header-below-stick-meta":"","astra-migrate-meta-layouts":"default","ast-page-background-enabled":"default","ast-page-background-meta":{"desktop":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}},"ast-content-background-meta":{"desktop":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}},"footnotes":""},"categories":[10],"tags":[12],"class_list":["post-5909","post","type-post","status-publish","format-standard","hentry","category-news","tag-beardedvulture"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.2 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>New paper: eggshell thickness from bearded vulture eggs from the Pyrenees decreased abruptly after 2004 - Vulture Conservation Foundation<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/4vultures.org\/es\/blog\/bearded-vulture-eggs-pyrenees\/\" \/>\n<meta property=\"og:locale\" content=\"es_ES\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"New paper: eggshell thickness from bearded vulture eggs from the Pyrenees decreased abruptly after 2004 - Vulture Conservation Foundation\" \/>\n<meta property=\"og:description\" content=\"Shell thickness of bearded vulture eggs from the period 1989 to 2012 (collected from nests after breeding failure and\/or fledging) was compared with eggs collected from 1858 to 1911 (and now held in European museums) by Mauro Hernandez and colleagues. 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