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Young (“Oceanic stage”) green sea turtle released with solar-powered satellite tag in Sargassum habitat. (credit: Gustavo Stahelin, UCF MTRG; Permit number NMFS-19508)

29.11.2021 Animal tracking applications Very young green turtles go into the Sargasso Sea

The life of young (“lost years”) marine turtles had long been a mystery. Improvements in satellite telemetry now enable to unveil part of it. North Atlantic young green turtles, in particular, seem to actively favor the Sargasso Sea and its natural accumulation of Sargassum algae. Photo: Young…
a blue-winged teal with an Argos PTT

17.11.2021 Animal tracking applications Tracking blue-winged teals, an avian influenza host

Wild migratory waterfowl such as blue-winged teals are known host of avian influenza. They can contaminate poultry which in turn develop highly contagious poultry diseases, some rare times affecting human population. Being able to monitor more closely the poultry when at risk is thus of foremost importance.
Argentinian researchers prepare to release a tagged franciscana

02.11.2021 Animal tracking applications Franciscana dolphins are staying close to home

Franciscana dolphins are small cetaceans living along the South American coast. They are threatened, in particular from anthropogenic activities, including fishing gear. Argos can help to better assess their home ranges and behaviors, which should help in protecting them. Photo: Argentinian researchers prepare to release a tagged franciscana…
A Chinese Sparrowhawk in flight

19.10.2021 Animal tracking applications Chinese and Japanese sparrowhawks fly over the East-Asian continent

Chinese and Japanese sparrowhawks are migratory raptors from East Asia. They migrate from Russia and China to Indonesia and other islands nearby. Understanding their migration routes, stopover sites and wintering grounds will help better protect them. Photo: A Chinese Sparrowhawk in flight (credit A. J. Pierce)  …
An Adélie penguin with an Argos PTT

07.10.2021 Animal tracking applications Adélie penguin movement analysed in three dimensions

Adélie penguins live and breed around Antarctica. As with all penguins, they forage in a three-dimensional environment, ranging horizontally at-sea and diving vertically to capture prey. A recent study analysed the relationship between horizontal and vertical movements, and how movement behaviour is influenced by environmental conditions.   Photo:…
Future Argos constellation

22.09.2021 ANGELS nanosatellite Constellation update: HEMERIA & Kinéis keep us informed

Kinéis, 25 nanosatellites carrying the metamorphosis of the Argos system is on its way. Our first Kinéis constellation update was earlier this year where we went backstage with Michel Sarthou, Kinéis’ Chief Technical Officer. Now, a few months later, we’re back again with…
an adult (white-feathered) and a juvenile (dark-feathered) northern gannet

21.09.2021 Animal tracking applications Tracking juvenile northern gannets: post-fledging movements and migration journeys

Juvenile northern gannets fledge independently from their parents. They are therefore required to learn flight and foraging skills and make an autumn migration on their own. Mortality in seabirds is high during their first year but when and why this mortality occurs is not well understood. Tracking juvenile…
A green turtle with an Argos PTT

10.09.2021 Animal tracking applications Western Australian green turtle behaviour analysed

A large population of green turtles is found in Western Australia. Using a database of tracks enables scientists to model their behaviour and help in deciding the protection regulations to enforce.   Photo: a green turtle with an Argos PTT going back to the sea after nesting…
Whimbrel in flight with transmitter antennae extending beyond the tail

25.08.2021 Animal tracking applications Whimbrels crossing tropical storms

Whimbrels migrate at the peak of the hurricane season, crossing the Atlantic. Different populations of this American shorebirds have different strategies to deal with tropical storms. However, they may have to find new ways with climate change worsening the storms. Photo: Whimbrel in flight with transmitter antenna extending…
a whale and the boat used to equip it

10.08.2021 Animal tracking applications A whale’s slumber detected in Argos data

Animal tracking with Argos began in the 1980s. Improved techniques and satellite coverage now allow for much more tracking, with better resolutions. However, old tracks analysed with current methods can help understand issues such as the sleep of whales as is the case of fin whales, here in…
Two scarlet macaws

28.07.2021 Animal tracking applications Argos Telemetry Collars Allow Scientists to Track Macaw Movement Patterns and Advocate for Expanded Protection

by Greta Hardy-Mittell Macaws are living in the wild – they are not “only” pets. Tracking Scarlet and Blue-and-Yellow Macaw with Argos enables to demonstrate that they move between protected and non-protected areas. Expanded Protection is thus needed to maintain their populations outside of protected areas. Photo: Two…
A blue shark

13.07.2021 Animal tracking applications Less oxygen in the ocean may mean more threats from fisheries for blue sharks

Blue sharks, as many pelagic species of sharks, are often found in the surface layers above the existing Oxygen Minimum Zones. Those layers might shrink due to climate change and the expansion of the oxygen-poor areas underneath, thus leading to a concentration of shark and their higher vulnerability…
Brent geese in flight; the one on the left has an Argos PTT (credit K. Clausen)

06.07.2021 Animal tracking applications Light-bellied Brent geese migrate non-stop across the open-ocean

Wild geese are among the most famous migratory birds – stars of fiction and documentaries. However, there are a number of different species, the Light-bellied Brent Geese among them. They don’t have the same migratory habits, as Argos telemetry enabled to assess. Photo: Brent geese in flight; the one on…
Argos birds webinar

16.06.2021 Animal tracking applications [WEBINAR] Argos Bird Telemetry: User Community Stopover

Registrations are now closed. This webinar was an opportunity to bring the community (virtually) back together while sharing some great research. Thank you to everyone who participated. You can access the replay below.
A calf manatee

16.06.2021 Animal tracking applications Manatee tracking study highlights the problems of dams in Africa

Manatees can live in rivers. However, in Africa, dams have been built over rivers, so that mitigation and modifications should be made to let the manatees come and go with the wet and dry seasons. A study examines this in the Senegal River. Photo: a calf…
Great albatross equipped with a Centurion beacon

31.05.2021 Animal tracking applications Albatrosses detect illegal fishing boats

Albatrosses tend to be attracted by fishing boats, which is one of the main threats on the species. The bycatch risk is usually assessed by comparing albatrosses’ and (legal) boats locations. Illegal fishing grounds are less easy to pinpoint, though, except that the boats keep their radar on,…
jaguar

14.05.2021 Animal tracking applications Jaguars in need of increasing biosphere reserve

Jaguars are one of the emblematic animals throughout the Americas. As most large terrestrial predators, it is threatened of extinction. Tracking them using Argos satellite telemetry enable to better understand their need in terms of available space and of environment. Photo Universidad Nacional Autónoma de México)  …
A rehabilitated loggerhead turtle after release fitted with an Argos PTT

26.04.2021 Animal tracking applications How do sea turtles fare after being rehabilitated and released?

Sea turtle rehabilitation centres are becoming increasingly important to threatened sea turtle populations around the world. However, one key question is whether rehabilitation is actually helpful to sea turtle populations; do sea turtles survive in the wild after being rehabilitated and released? Photo: A rehabilitated loggerhead turtle after…
Michel Sarthou, Technical Director at Kinéis

14.04.2021 ANGELS nanosatellite Backstage pass: Kinéis constellation update

If you had to describe Argos in two words, what it would be? According to Michel Sarthou, Chief Technical Officer at Kinéis, former Head of Argos space segment at CNES (French Space Agency) it would be: “Success Story”. Many may not know this but the first…
a common nighthawk

12.04.2021 Animal tracking applications Common nighthawk populations do not stay apart during migrations

The common nighthawk is an American migratory bird, traveling long distances between North America and Tropical South America. For their conservation and understanding, biologists study if their different populations remain separated, or if they mix at some places(s) or time(s) during their migrations. Photo: a…
Thomas Gray, CLS expert, holding a goniometer

07.04.2021 Goniometer Three Top Tips for using your Goniometer with Thomas Gray

Thomas Gray joined the Argos team in 2016 and has quickly become our go-to person on all things Goniometer. He brings ten years of sales and marketing experience in the underwater tech realm previously working for an Argos satellite tag manufacturer. Some of Thomas’ favorite activities…
Emperor penguins

31.03.2021 Animal tracking applications Argos helps in revealing how juvenile emperor penguins learn to feed

Emperor penguins and their young are emblematic of Antarctica. Argos satellite telemetry enabled to track the adults quite early. Now the scientists are looking at how the juveniles are learning to forage in the ocean, all on their own. Photo: juvenile emperor penguins; the leftmost one seems…
Glider found with goniometer

26.03.2021 Argos news & events Lost Glider at sea found thanks to Argos and Goniometer

Gliders are valuable platforms in terms of equipment but also in terms of the vital information they collect. It is therefore not surprising that many of them are equipped with small Argos beacons in order to recover them in case of loss at sea. Currently, these Argos beacons…
Antarctic fur seal and chinstrap penguin with an Argos PTT

16.03.2021 Animal tracking applications How male Antarctic fur seals compete with fisheries and penguins for krill

Krill is at the base of the food-chain near Antarctica. It is also fished, with regulations enforced in regions where endangered species are also feeding on it. However, other species can also compete for this particular resource. Argos helps in assessing the foraging areas of male Antarctic fur…
A pronghorn

01.03.2021 Animal tracking applications Pronghorn migration across borders and human-made landscapes

Mapping of ungulate migration habitat is important for their conservation. Pronghorn are an endemic species of North America (Canada, USA, and Mexico), migrating between different regions. Satellite telemetry helps in modelling what can hinder pronghorn migration and in taking steps to smooth their paths. Photo: A pronghorn (credit…
young polar bears

18.02.2021 Argos news & events Feedback from the field: Kineis – the Future of Argos

 “The new system looks very promising for us. I think it’s a great step forward, this is a major advancement which is coming at a critical juncture in the conservation of polar bears as the climate continues to warm, this is going to be a valuable tool. We are…
A marine turtle with an Argos PTT

16.02.2021 Animal tracking applications How endangered species such as marine turtles use Marine Protected Areas?

Marine Protected Areas are one of the main instruments for endangered species protection. Argos can help in defining  their outlines to have the best impact, especially when a large number of tracks is available for habitat analysis and modelling. Example with marine turtles in the Floridian ecoregion. Photo:…
Bottle released in the water

02.02.2021 Oceanography and meteorological applications Tracking plastic bottles from rivers to ocean

Plastic in the environment, especially in the ocean, is a major pollution concern currently. If it is well established that most of it comes from land through rivers, how far and by which path? A study using open-source Argos chipsets in bottles to track them tries to give…
Mahi-Mahi fish

29.01.2021 Animal tracking applications The Argos Goniometer recovers data of a tagged fish eaten by a predator

Scientists Chiang, Wei-Chuan (Riyar) & Shian-Jhong Lin, from Eastern Marine Biology Research Center of Fisheries Research Center, Taiwan and Michael K. Musyl from Pelagic Research Group LLC, have been studying the movement patterns and habitat preferences of Dolphinfish in Taitung. They recently recovered an Argos archival tag,…
an Amazonian black skimmer

19.01.2021 Animal tracking applications Modelling Amazonian black skimmers habitat use

The Amazon Rainforest is hard to reach, but home to a large number of species. Birds like the Amazonian black skimmers live apart of their life there, but move around a lot. Argos satellite telemetry enable researchers to analyze mathematically the birds’ use of the environment, so as…