A herd of rare Przewalski's horses grazes in the vast expanses of the Hortobágy National Park in Hungary. They disappeared from the wild in the last century. Experts had to turn to a breeding program. Now there are approximately 2,000 Przewalski's horses in the world. About 300 live in this reserve. Hungarian scientists have been observing animals for 20 years. Now they are being helped by drones. This...
