Turkey initiated efforts to combat red tail caterpillars that emerged in a forest area in the west, according to a regional forest director on Friday. The caterpillar -- which feed on beech leaves -- seen in a forest area between Bursa and Kütahya provinces and emerged due to climate change, Yalçın Akın, forest director in Bursa province, told Anadolu Agency. Also known as pale tussock caterpillar, it was seen last year for the first time in a 40-50-hectare (99-124-acre) field, he said. 'We do not use chemical pesticides, it is strictly forbidden in our forests,' he said, adding that they fight against the harmful insects with biological pesticides. We prefer fighting against the harmful insects with the living creatures feeding on them,' he noted. He added that the caterpillar might be seen in other regions next year due to climate change. 'This is a natural phenomenon that totally depends on the climate change, humidity and temperature balance in the location,' Akın said.