Scientists have found that Drongos in the Kalahari have developed a way of stealing food from meerkats. The birds follow the animals around until the meerkats have found some food and then fake alarm calls. This causes the meerkats to run for their burrows abandoning the food and leaving it for the birds. The birds do not use their own alarm calls but those of other species changing them frequently. This persuades the meerkat that there is a dangerous predator in the area.