Heat-seeking drones are being used to count pup numbers at one of England's largest grey seal colonies.
The drones get above the action to record the protected Atlantic grey seals in a manner that is far less intrusive than human counting by close-quarters observation.
The Farne Islands, off the Northumberland coast, is an important haven for thousands of seabirds and hundreds of adult seals, and are looked after by the National Trust.
“We are using a drone … which as well as filming the pups is fitted with thermal imaging technology to help make the count more accurate and less stressful for the seals,” said ranger Thomas Hendry.
“The drone gives us an excellent view of the islands and from the clear images we can count the total numbers of seal pups born on each island.
“It also allows us to see on to the smaller islands more frequently which can be more challenging to visit at this time of year due to difficult sea conditions.”
The drone aerial images will be analysed to properly survey the new population.
One drone films the seals from above in the normal way and a second uses thermal imaging to give analysts more accurate results.
Drones are increasingly used to count wildlife because they are less intrusive and stressful for animals than having a human up close.
“The increase in numbers in recent years is thought to be down to the lack of predators or disturbance and the fact that the grey seals are generalist rather than specialist feeders,” said Mr Hendry.
“Once born, they're sprayed with a harmless vegetable dye to indicate the week they are born. Using a rotation of three or four colours allows the rangers to keep track of the numbers.”
The last survey was completed in 2019 with a record number of 2,823 pups born, an increase of 62 per cent since 2014. Numbers are thought to have continued upwards since.
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Two-step truce
The UN-brokered ceasefire deal for Hodeidah will be implemented in two stages, with the first to be completed before the New Year begins, according to the Arab Coalition supporting the Yemeni government.
By midnight on December 31, the Houthi rebels will have to withdraw from the ports of Hodeidah, Ras Issa and Al Saqef, coalition officials told The National.
The second stage will be the complete withdrawal of all pro-government forces and rebels from Hodeidah city, to be completed by midnight on January 7.
The process is to be overseen by a Redeployment Co-ordination Committee (RCC) comprising UN monitors and representatives of the government and the rebels.
The agreement also calls the deployment of UN-supervised neutral forces in the city and the establishment of humanitarian corridors to ensure distribution of aid across the country.
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UAE currency: the story behind the money in your pockets
