Percnostola is a genus of birds belonging to the family Tyrannidae, commonly known as tyrant flycatchers. These birds are primarily found in the tropical regions of South America, where they inhabit various environments, including forests and open areas. Members of the Percnostola genus are known for their distinctive vocalizations and insectivorous diet. They play an important role in controlling insect populations and are often observed perched on branches, scanning for prey. Their plumage typically features earthy tones, which help them blend into their surroundings.