{"id":40586,"date":"2025-08-19T16:39:32","date_gmt":"2025-08-19T13:39:32","guid":{"rendered":"https:\/\/4vultures.org\/?p=40586"},"modified":"2025-08-19T16:50:00","modified_gmt":"2025-08-19T13:50:00","slug":"life-aegypius-return-reaches-milestone-of-50-cinereous-vultures-fitted-with-gps-gsm-transmitters","status":"publish","type":"post","link":"https:\/\/4vultures.org\/es\/blog\/life-aegypius-return-reaches-milestone-of-50-cinereous-vultures-fitted-with-gps-gsm-transmitters\/","title":{"rendered":"LIFE Aegypius Return reaches milestone of 50 Cinereous Vultures fitted with GPS\/GSM transmitters"},"content":{"rendered":"

The mortality rate of the monitored birds stands at 18% and is largely caused by human factors. <\/p>\n\n\n\n

The 2025 breeding season – the third closely monitored by the LIFE Aegypius Return<\/a> project – is nearing its end. This year, nine Cinereous Vulture chicks were tagged in the nest, and the work was featured on national television<\/a> (SIC)!\u00a0<\/p>\n\n\n\n

\"Cinereous
Cinereous Vulture chick in the nest \u00a9 A\u0301lvares Figueira<\/figcaption><\/figure><\/div>\n\n\n\n

<\/p>\n\n\n\n

There are five Cinereous Vulture colonies in Portugal\u00a0<\/h2>\n\n\n\n

La Cinereous Vulture (Aegypius monachus<\/em>)<\/a> is Europe’s largest bird of prey. It builds very large nests at the top of trees. It is also a gregarious species, organised in breeding colonies where younger birds can socialise and learn all vital behaviours from older individuals.\u00a0<\/p>\n\n\n\n

There are five known breeding colonies in Portugal: Douro Internacional, Serra da Malcata, Tejo Internacional, Herdade da Contenda and, most recently<\/a>, Vidigueira\/Portel. These colonies have been closely monitored by the LIFE Aegypius Return project teams and collaborating organisations since 2023. As part of the efforts to conserve the Cinereous Vulture \u2013 classified as Endangered in Portugal \u2013 reproduction is monitored in detail, and some birds are fitted with GPS\/GSM transmitters. This technology<\/a> allows the remote tracking of all movements and behaviours and enables intervention if necessary. It is also essential for understanding and tackling mortality factors.\u00a0<\/p>\n\n\n\n

\n
\"Fitting
Fitting a GPS:GSM transmitter to a Cinereous Vulture chick \u00a9 Paulo Monteiro<\/figcaption><\/figure>\n\n\n\n
\"Fitting
Fitting a GPS:GSM transmitter to a Cinereous Vulture chick \u00a9 Paulo Monteiro<\/figcaption><\/figure>\n<\/figure>\n\n\n\n

<\/p>\n\n\n\n

50 Cinereous Vultures with GPS\/GSM transmitter\u00a0<\/h2>\n\n\n\n

With chick tagging completed in June<\/a> and July this year, the LIFE Aegypius Return project has reached the milestone of 50 Cinereous Vultures equipped with GPS\/GSM transmitters. In total, 43 chicks in the nest have been tagged (15 in 2023, 19 in 2024 and 9 in 2025), along with two rehabilitated juveniles (Zimbro and Ger\u00eas<\/a>), the senior Aravil<\/a> and the four Cinereous Vultures that were held in acclimatisation<\/a> in Douro Internacional in 2024. <\/p>\n\n\n\n

Of these 50 birds, 37 are alive, nine (18%) have died, and four (all born in Serra da Malcata) are of unknown whereabouts, as their transmitters have been unable to connect to the GSM network to send information. <\/p>\n\n\n\n

Of the nine Cinereous Vultures that have died, only three are confirmed to have died of natural causes. One (named Mirante) was shot<\/a>, another (ring code 5J) was poisoned<\/a>, and another (named Freixo) died in a collision<\/a> with power lines. The deaths of the remaining three vultures remain under investigation.\u00a0\u00a0<\/p>\n\n\n\n

The collection of this information was only possible thanks to remote tracking of tagged birds and the swift action of the project\u2019s technicians and Portuguese and Spanish authorities in processing detected mortality cases. <\/p>\n\n\n\n

Fortunately, remote data also makes it possible to save Cinereous Vultures that would otherwise have almost certainly died. Remember, for example, the stories of Natator<\/a>, Pousio<\/a>, Medronho and 5E<\/a>. <\/p>\n\n\n\n

\"Detection
Detection of the dead Cinereous Vulture 5J, showing the GPS:GSM transmitter \u00a9ATN<\/figcaption><\/figure>\n\n\n\n

Tagging Cinereous Vultures: transmitters, rings and biological samples\u00a0<\/h2>\n\n\n\n

In the context of the LIFE Aegypius Return project, the term “tagging<\/a>” doesn’t just mean attaching GPS\/GSM transmitters. For logistical reasons, some vultures are tagged only with identification rings placed on their legs. If the bird is observed or captured in the future, the rings also provide information on its origin and history. <\/p>\n\n\n\n

As direct contact with these birds is quite rare, complex and subject to a number of legal permits, all opportunities are also used to collect biological samples such as blood and feathers. These materials are sent to specialist laboratories in Portugal and abroad to increase scientific knowledge of the species (e.g. genetic, biochemical and toxicological parameters) and improve veterinary and conservation care. <\/p>\n\n\n\n

In total, the LIFE Aegypius Return project has already ringed and sampled 69 Cinereous Vultures (19 individuals in addition to those fitted with GPS\/GSM transmitters). <\/p>\n\n\n\n

All these procedures require the intervention of specialists duly accredited by the competent authorities. <\/p>\n\n\n\n

\"Veterinary
Veterinary check-up and collection of biological samples from a Cinereous Vulture chick \u00a9 VCF<\/figcaption><\/figure><\/div>\n\n\n\n

<\/p>\n\n\n\n

A unifying species\u00a0<\/h2>\n\n\n\n

The conservation of the Cinereous Vulture is only possible through the cooperation of many people and institutions from various sectors. Examples of such joint efforts include breeding monitoring and tagging work, where collaboration is clearly visible. <\/p>\n\n\n\n

The LIFE Aegypius Return partners thank all those involved in monitoring the Cinereous Vulture: technicians and rangers from the ICNF (Institute for Nature Conservation and Forests), Rewilding Portugal, Quercus, and the Agentes de Medio Ambiental<\/em> from the Junta de Extremadura <\/em>and the Junta de Andaluc\u00eda<\/em>. <\/p>\n\n\n\n

For the tagging work carried out in July, thanks are extended to: <\/p>\n\n\n\n

– Douro International: partners Palombar, ICNF – Dire\u00e7\u00e3o Regional do Norte, veterinary team from HV-UTAD (Veterinary Hospital of the University of Tr\u00e1s-os-Montes and Alto Douro), Junta de Castilla y Le\u00f3n<\/em>, Arribes del Duero Natural Park, Biodiversity Research Institute (Instituto Mixto de Investigaci\u00f3n en Biodiversidad (IMIB, CSIC-Universidad de Oviedo-Principado de Asturias), and BirdWings. <\/p>\n\n\n\n

– Tejo Internacional: partners SPEA (Sociedade Portuguesa para o Estudo das Aves) and LPN (Liga para a Protec\u00e7\u00e3o da Natureza), Alfonso Godino (Hawk Mountain Sanctuary), Samuel Infante, Jade Gava (\u00c9cole Nationale V\u00e9t\u00e9rinaire de Toulouse), CERAS (Centro de Estudos e Recupera\u00e7\u00e3o de Animais Selvagens\/Quercus), ICNF – Dire\u00e7\u00e3o Regional do Centro, Jo\u00e3o Esteves, S\u00e9rgio Saldanha, Daniel Barnett, Catarina Cerquido. <\/p>\n\n\n\n

\"Group
Group photo in Tejo Internacional \u00a9Francisca Carreira<\/figcaption><\/figure><\/div>\n\n\n\n

– Vidigueira\/Portel: partners LPN and VCF (Vulture Conservation Foundation), Herdade do Monte da Ribeira – Eng. Mariana Carmona, ICNF – Dire\u00e7\u00e3o Regional do Alentejo, Jade Gava, Maria Soares (University of Coimbra), Carlos Pacheco, and SIC – Alentejo reporting team (Daniela Alves and Jos\u00e9 Ribeiro).\u00a0<\/p>\n\n\n\n

\"Group
Group photo at Herdade do Monte da Ribeira \u00a9Ta\u0302nia Carvalho<\/figcaption><\/figure><\/div>\n\n\n\n

– Herdade da Contenda: partners LPN, VCF, Herdade da Contenda and GNR – Comando Territorial de Beja e Destacamento Territorial de Moura, Jade Gava, Maria Soares, Joaquim Pedro Ferreira (PlaySolutions), Carlos Cruz, Jos\u00e9 \u00c1lvares Figueira, V\u00edtor Conde\u00e7o, Margarida Rocha, Ana Delgado, Carlos Pacheco.\u00a0<\/p>\n\n\n\n

\"Group
Group photo at Herdade da Contenda \u00a9Jos\u00e9 Pedro Tavares\/ VCF<\/figcaption><\/figure><\/div>\n\n\n\n

About LIFE Aegypius Return<\/h2>\n\n\n\n
\"LAR<\/figure>\n\n\n\n

The LIFE Aegypius Return project is co-financed by the European Union\u2019s LIFE programme<\/a>. Its success depends on the involvement of all the relevant stakeholders<\/em>, and the collaboration of the partners: the Vulture Conservation Foundation (VCF)<\/a>, the coordinating beneficiary, and the local partners Palombar \u2013 Conserva\u00e7\u00e3o da Natureza e do Patrim\u00f3nio Rural<\/a>, Herdade da Contenda<\/a>, Sociedade Portuguesa para o Estudo das Aves<\/a>, Liga para a Protec\u00e7\u00e3o da Natureza<\/a>, Associa\u00e7\u00e3o Transum\u00e2ncia e Natureza<\/a>, Fundaci\u00f3n Naturaleza y Hombre<\/a>, Guarda Nacional Republicana<\/a> y Associa\u00e7\u00e3o Nacional de Propriet\u00e1rios Rurais Gest\u00e3o Cineg\u00e9tica e Biodiversidade<\/a>.<\/p>\n\n\n\n

\"\"<\/figure>","protected":false},"excerpt":{"rendered":"

The mortality rate of the monitored birds stands at 18% and is largely caused by human factors.  The 2025 breeding season – the third closely monitored by the LIFE Aegypius Return project – is nearing its end. This year, nine Cinereous Vulture chicks were tagged in the nest, and the work was featured on national […]<\/p>\n","protected":false},"author":2,"featured_media":40587,"comment_status":"closed","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":"set","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":[399,14,167,59],"class_list":["post-40586","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-news","tag-2025-08","tag-cinereousvulture","tag-lifeaegypiusreturn","tag-monitoring"],"yoast_head":"\nLIFE Aegypius Return reaches milestone of 50 Cinereous Vultures fitted with GPS\/GSM transmitters - 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\/life-aegypius-return-reaches-milestone-of-50-cinereous-vultures-fitted-with-gps-gsm-transmitters\/\" \/>\n<meta property=\"og:locale\" content=\"es_ES\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"LIFE Aegypius Return reaches milestone of 50 Cinereous Vultures fitted with GPS\/GSM transmitters - Vulture Conservation Foundation\" \/>\n<meta property=\"og:description\" content=\"The mortality rate of the monitored birds stands at 18% and is largely caused by human factors.  The 2025 breeding season – the third closely monitored by the LIFE Aegypius Return project – is nearing its end. 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