コウゲンアリモズ Thamnophilus aroyae

Small antshrike found in the Andes of Bolivia and adjacent areas of Peru near the border. Male is gray with white wingbars and pale eyes; female is brown with a gray face. Male is a bit similar to Variable Antshrike, but he is gray, not glossy black. Skulks in dense thickets at forest edge, where it is usually heard before being seen. Gives nasal caws, either alone or in a short series.