This tyrant flycatcher perches near water and catches insects in short, low flights. An Argentine species account describes its black-and-white pattern and foraging at the water surface and on aquatic plants.
The university species account describes white on the forehead, face, rump, and parts of the wings, with black over the rest of the body. The bill and legs are also black.
It perches in trees or shrubs near water and makes short, low flights toward emergent aquatic vegetation. It catches insects in the air or at the surface and may walk over floating aquatic plants while searching for food.
An extinction-risk assessment has not been added yet.