The term "Empidonax" refers to a genus of small, insect-eating birds commonly known as the empidonax flycatchers. These birds are primarily found in North America and are known for their distinctive calls and subtle plumage, which often makes them challenging to identify in the wild. Empidonax flycatchers typically inhabit wooded areas, wetlands, and shrubby regions. They are known for their unique nesting habits and often build their nests in dense vegetation, where they can easily catch insects to feed their young.