HomeGlossary Bird topography Eye-ring A ring of contrasting feathers or bare skin around the eye. A complete versus a broken eye-ring separates several flycatchers and vireos. Bird topographyRelated termsFull glossary Supercilium A pale stripe above the eye, often called the eyebrow. Primaries The outermost flight feathers of the wing, attached to the "hand"; they provide most of the forward thrust. Malar stripe A dark stripe running from the base of the bill down the side of the throat. Culmen The upper ridge of the bill from its tip to where the feathers begin. Casque A helmet-like growth on top of the bill or head. Lores The area between the eye and the base of the bill.
Primaries The outermost flight feathers of the wing, attached to the "hand"; they provide most of the forward thrust.