Tjalle joined the Armonía team in Bolivia in 2015 as the Barba Azul Nature Reserve Coordinator in charge of the reserve development and its sustainability. He partook in the first ever Blue-throated Macaw global census and led the expedition to find the breeding grounds of the northwestern subpopulation. Since April 2018, he is the Conservation Program Director, supervising Armonía’s conservation actions throughout Bolivia. In 2020, Tjalle was awarded with the Future for Nature Award for his Blue-throated Macaw conservation efforts.