Two Egyptian vultures, Boris and Jennie, can now be monitored live after being equipped with satellite trackers, the Bulgarian Society for Protection of Birds (BSPB) has said.

Boris and Jennie, two adult vultures, are representatives of an animal species whose extinction rate is among the highest in Europe.

Until 2015, a total of 20 Egyptian vultures have been tagged with satellite transmitters as part of the Life+ project The Return of the Neophron to track migration routes to study migration routes, wintering areas and mortality causes in the first two years of their lives.

But Boris and Jenny are among the few adult birds getting such GPS trackers. A message on the project's website reads that they were caught with a whoosh net to have the transmitters tagged.

"The information which will be gathered with the help of Boris and Jenny before their migration will help us understand more about the territory use and behavior of the Egyptian vultures in the Balkans, and thus help to select the most effective conservation actions in the breeding grounds."

The project is run by the BSPB, the Hellenic Ornithological Society (HOS), WWF Greece and Royal Society for the Protection of Birds (RSPB).