Stierling’s wren-warbler in South Africa

There is a loud, high-pitched, monotonous warbling sound that is heard throughout the bushveld in the Hoedspruit area in summer, particularly in areas with decent size trees. The Robert’s app describes the sound as a piercing biririt, biririt, biririt, biririt. It can be hard to locate the bird as it is small and typically calls from up in the tree. This is the call of the Stierling’s wren-warbler