Taczanowski's Ground-Tyrant Muscisaxicola griseus

Ashy gray flycatcher with a strong white eyebrow that perches upright on the ground. Found in high-elevation grasslands and pastures. Larger size and more upright posture give it a taller appearance than the similar Cinereous Ground-Tyrant; the long white eyebrow that extends to or past the eye is also a good distinguishing feature (it is much shorter or absent in Cinereous). Does not have a crown patch as many other ground-tyrants do.